Weather

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://artifacts.apis.io/smarterweather-com/json-schema/smarterweather-com-weather-schema.json",
  "title": "Weather",
  "description": "Composite blended weather payload returned by `GET /v1/weather`.\nSection presence is controlled by the `include` query parameter;\n`location` and `gis` are always present. With the default `view=detailed` and no `fields`, every section\nthat is present is the complete shape documented below. `view=concise`\nand `fields` project the members of `hourly[]` and `daily[]` rows\n(every other section stays complete), and `hourly_step` thins\n`hourly[]` rows; see \"Response density, sampling and sparse\nfieldsets\" on `GET /v1/weather`. A shaped body is always a\nkey-subset of the detailed body for the same request.\n",
  "x-generated": "2026-10-30",
  "x-method": "derived",
  "x-generator": "derive-json-schema.py",
  "x-source": "openapi/smarterweather-com-openapi.yaml#/components/schemas/Weather",
  "type": "object",
  "required": [
    "location",
    "gis",
    "meta",
    "attribution"
  ],
  "properties": {
    "location": {
      "$ref": "#/$defs/Location"
    },
    "current": {
      "$ref": "#/$defs/Current"
    },
    "hourly": {
      "type": "array",
      "description": "Hourly forecast, ordered ascending by `time`.",
      "items": {
        "$ref": "#/$defs/Hourly"
      }
    },
    "daily": {
      "type": "array",
      "description": "Daily forecast, ordered ascending by `date`.",
      "items": {
        "$ref": "#/$defs/Daily"
      }
    },
    "alerts": {
      "type": "array",
      "description": "Active NWS alerts for the location, present whenever the section is included and its fetch succeeded. `[]` means no alerts were in effect in the latest alerts snapshot, which can trail `meta.generated_at` by up to about 30 seconds. Absent when the section is not included, or when its fetch failed (a `meta.warnings` entry with `section: alerts` says so). A stale replay (`X-SW-Stale: 1` header, or a `stale_response` warning on a batch row) repeats the alerts as of its own `meta.generated_at`, not the current set.",
      "items": {
        "$ref": "#/$defs/Alert"
      }
    },
    "outlooks": {
      "type": "array",
      "description": "SPC convective outlooks active for the location, present whenever the section is included and its fetch succeeded. `[]` means no outlook was in effect in the latest outlooks snapshot, which can trail `meta.generated_at` by up to about 30 seconds. Absent when the section is not included, or when its fetch failed (a `meta.warnings` entry with `section: outlooks` says so). A stale replay repeats the outlooks as of its own `meta.generated_at`.",
      "items": {
        "$ref": "#/$defs/Outlook"
      }
    },
    "astro": {
      "$ref": "#/$defs/Astro"
    },
    "gis": {
      "$ref": "#/$defs/GIS"
    },
    "units": {
      "$ref": "#/$defs/Units"
    },
    "attribution": {
      "$ref": "#/$defs/Attribution"
    },
    "narrations": {
      "$ref": "#/$defs/Narrations"
    },
    "guidance": {
      "$ref": "#/$defs/Guidance"
    },
    "discussions": {
      "$ref": "#/$defs/Discussions"
    },
    "nowcast": {
      "$ref": "#/$defs/Nowcast"
    },
    "climate": {
      "allOf": [
        {
          "$ref": "#/$defs/ClimateNormals"
        }
      ],
      "description": "Day-of-year climate normals for the location, populated when\n`include=climate` is requested. Identical in shape to the\n`GET /v1/climate/normals` body.\n\nThis block is the normals themselves — what is typical here. For\nhow the forecast compares to them, read `daily[].climate`, which\ncarries the same normals joined to each forecast day along with\nthe signed departure.\n\nOmitted when no station with normals is near the point; that case\nreports `coverage_limited` in `meta.warnings[]` rather than\nfailing the request.\n"
    },
    "metar": {
      "$ref": "#/$defs/Metar"
    },
    "meta": {
      "$ref": "#/$defs/Meta"
    }
  },
  "$defs": {
    "AFDGuidance": {
      "type": "object",
      "x-stability": "experimental",
      "description": "Area Forecast Discussion: structured fields plus optional raw bulletin\n`body`.\n",
      "properties": {
        "synopsis": {
          "type": "string"
        },
        "key_takeaway": {
          "type": "string"
        },
        "confidence": {
          "type": "string",
          "description": "Forecaster-stated confidence level (free text)."
        },
        "issued_at": {
          "type": [
            "string",
            "null"
          ],
          "format": "date-time"
        },
        "wfo": {
          "type": "string",
          "description": "Issuing Weather Forecast Office identifier."
        },
        "body": {
          "type": "string",
          "description": "Full AFD bulletin text when available."
        }
      }
    },
    "Alert": {
      "type": "object",
      "description": "NWS weather alert active for the requested location.",
      "required": [
        "id",
        "event",
        "severity",
        "urgency",
        "certainty",
        "headline",
        "sender",
        "status",
        "onset",
        "ends",
        "effective",
        "expires",
        "expiration"
      ],
      "properties": {
        "id": {
          "type": "string",
          "description": "Unique alert identifier (the NWS message id). Pass it to\n`GET /v1/alerts/{id}` for the full alert.\n"
        },
        "event": {
          "type": "string"
        },
        "severity": {
          "type": "string",
          "enum": [
            "Extreme",
            "Severe",
            "Moderate",
            "Minor",
            "Unknown"
          ]
        },
        "urgency": {
          "type": "string",
          "enum": [
            "Immediate",
            "Expected",
            "Future",
            "Past",
            "Unknown"
          ]
        },
        "certainty": {
          "type": "string",
          "enum": [
            "Observed",
            "Likely",
            "Possible",
            "Unlikely",
            "Unknown"
          ]
        },
        "headline": {
          "type": "string"
        },
        "sender": {
          "type": "string",
          "description": "Issuing NWS office identifier."
        },
        "status": {
          "type": "string",
          "description": "Alert lifecycle status (e.g., `Actual`, `Exercise`, `Test`)."
        },
        "onset": {
          "type": "string",
          "format": "date-time"
        },
        "ends": {
          "type": "string",
          "format": "date-time"
        },
        "effective": {
          "type": "string",
          "format": "date-time"
        },
        "expires": {
          "type": "string",
          "format": "date-time"
        },
        "expiration": {
          "type": "string",
          "format": "date-time",
          "description": "Final expiration time used for cache invalidation."
        },
        "area_desc": {
          "type": "string",
          "description": "Human-readable affected area."
        },
        "highlights": {
          "type": "object",
          "additionalProperties": {
            "type": "string"
          },
          "description": "Map of salient callouts extracted from the alert text\n(e.g., `{\"hazard\": \"Strong winds\", \"impact\": \"Loose debris possible\"}`).\n"
        }
      }
    },
    "Astro": {
      "type": "object",
      "description": "Astronomical data for the requested location and date.",
      "required": [
        "day_length",
        "daylight_length",
        "moon_phase",
        "moon_phase_name",
        "moon_illumination"
      ],
      "properties": {
        "civil_dawn": {
          "type": [
            "string",
            "null"
          ],
          "format": "date-time",
          "description": "Null when civil twilight does not begin or end on this date."
        },
        "sunrise": {
          "type": [
            "string",
            "null"
          ],
          "format": "date-time",
          "description": "Null on polar day and night (see `polar`)."
        },
        "solar_noon": {
          "type": [
            "string",
            "null"
          ],
          "format": "date-time"
        },
        "sunset": {
          "type": [
            "string",
            "null"
          ],
          "format": "date-time",
          "description": "Null on polar day and night (see `polar`)."
        },
        "civil_dusk": {
          "type": [
            "string",
            "null"
          ],
          "format": "date-time",
          "description": "Null when civil twilight does not begin or end on this date."
        },
        "day_length": {
          "type": "integer",
          "minimum": 0,
          "description": "Seconds from sunrise to sunset; 86400 under midnight sun, 0 in polar night."
        },
        "daylight_length": {
          "type": "integer",
          "minimum": 0,
          "description": "Seconds from civil dawn to civil dusk; 86400 when civil twilight never ends (white nights, midnight sun). 0 when there is no civil daylight or it is unknown; see civil_dawn, civil_dusk and polar."
        },
        "moonrise": {
          "type": [
            "string",
            "null"
          ],
          "format": "date-time",
          "description": "Null when no moonrise occurs on this date."
        },
        "moonset": {
          "type": [
            "string",
            "null"
          ],
          "format": "date-time",
          "description": "Null when no moonset occurs on this date."
        },
        "moon_phase": {
          "type": "number",
          "format": "double",
          "minimum": 0,
          "maximum": 1,
          "description": "Moon phase (0 = new, 0.5 = full, 1 = new)."
        },
        "moon_phase_name": {
          "type": "string",
          "enum": [
            "New Moon",
            "Waxing Crescent",
            "First Quarter",
            "Waxing Gibbous",
            "Full Moon",
            "Waning Gibbous",
            "Last Quarter",
            "Waning Crescent"
          ]
        },
        "moon_illumination": {
          "type": "number",
          "format": "double",
          "minimum": 0,
          "maximum": 1
        },
        "polar": {
          "type": [
            "string",
            "null"
          ],
          "enum": [
            "midnight_sun",
            "polar_night",
            null
          ],
          "description": "Set when the sun neither rises nor sets on this date: midnight_sun (above the horizon all day; day_length is 86400) or polar_night (below it all day; day_length is 0). sunrise and sunset are then null. Null when the sun rises and sets."
        },
        "sky": {
          "x-stability": "experimental",
          "allOf": [
            {
              "$ref": "#/$defs/Sky"
            }
          ],
          "description": "Sunrise and sunset color forecast for this date, present only\nwhen `include=sky` is requested, enabled for the API key, and a\nforecast exists for the date.\n\n**Experimental** (`x-stability: experimental`): excluded from the\n90-day breaking-change commitment.\n"
        }
      }
    },
    "Attribution": {
      "type": "object",
      "description": "Attribution for the data sources that contributed to this response.\n`sources` is an explicit list of canonical identifiers suitable\nfor compliance checklists; `notice` is a human-readable catch-all\ncovering licensing / credit language.\n",
      "required": [
        "sources",
        "notice"
      ],
      "properties": {
        "sources": {
          "type": "array",
          "description": "Canonical source identifiers that contributed data. `EPA AirNow`\nis listed only when the body as returned carries an air-quality\nvalue (`current.aqi`, `pm25`, `ozone` or `pm10`, `hourly[].aqi`,\n`daily[].aqi_max`, `daily[].day.aqi` or `daily[].night.aqi`), so a\n`view` or `fields` selection that drops those columns drops it.\n",
          "items": {
            "type": "string"
          }
        },
        "notice": {
          "type": "string",
          "description": "Human-readable attribution notice."
        }
      }
    },
    "ClimateNormals": {
      "type": "object",
      "description": "Day-of-year climate normals for a point, read from the gridded normals\nacross CONUS and otherwise from the nearest station with records. The\nresolved station is always named, whichever supplied the values.\n",
      "required": [
        "station",
        "meta",
        "days"
      ],
      "properties": {
        "station": {
          "$ref": "#/$defs/ClimateNormalsStation"
        },
        "meta": {
          "$ref": "#/$defs/ClimateNormalsMeta"
        },
        "days": {
          "type": "array",
          "description": "Per-day normals series, in requested date order.",
          "items": {
            "$ref": "#/$defs/ClimateNormalsDay"
          }
        },
        "location": {
          "$ref": "#/$defs/Location",
          "description": "Resolved location, as `/v1/weather` returns it. Present when the\nplace was resolved: always for a `zip` or `location` request, and\nfor `lat`/`lon` when the coverage check's lookup answered in time\n(omitted when that check fails open).\n"
        }
      }
    },
    "ClimateNormalsDay": {
      "type": "object",
      "description": "One day-of-year slice. Fields are omitted when no normal is available,\nwhich is not the same as a value of zero. `normal_precip` is\nadditionally omitted on any station-sourced day — see its description.\n",
      "required": [
        "date",
        "month",
        "day"
      ],
      "properties": {
        "date": {
          "type": "string",
          "format": "date",
          "description": "Calendar date this slice was requested for."
        },
        "month": {
          "type": "integer",
          "description": "Month of the day-of-year slice (1-12)."
        },
        "day": {
          "type": "integer",
          "description": "Day of month (1-31)."
        },
        "normal_high": {
          "type": "number",
          "format": "double",
          "description": "Average daily maximum temperature."
        },
        "normal_low": {
          "type": "number",
          "format": "double",
          "description": "Average daily minimum temperature."
        },
        "normal_mean": {
          "type": "number",
          "format": "double",
          "description": "Average daily mean temperature."
        },
        "normal_high_stddev": {
          "type": "number",
          "format": "double",
          "description": "Standard deviation of the daily maximum. An interval, so it scales\nwithout the freezing-point offset: 3 °C of spread is 5.4 °F.\n\nAlways from the nearest station, including on a day whose\ntemperatures came from the grid — the gridded normals publish no\nstandard deviations. On such a day the temperatures describe your\npoint while this describes the named station, so read\n`station.distance_km` before narrating \"unusually warm\" off this\nspread. The same holds for `normal_low_stddev`,\n`normal_mean_stddev`, `years` and `completeness_flag`.\n"
        },
        "normal_low_stddev": {
          "type": "number",
          "format": "double",
          "description": "Standard deviation of the daily minimum. Station-sourced on the\nsame terms as `normal_high_stddev`.\n"
        },
        "normal_mean_stddev": {
          "type": "number",
          "format": "double",
          "description": "Standard deviation of the daily mean. Station-sourced on the same\nterms as `normal_high_stddev`.\n"
        },
        "normal_precip": {
          "type": "number",
          "format": "double",
          "description": "Average daily precipitation amount — inches when `unit=imperial`,\nmillimetres when `unit=metric`.\n\nThe exact inverse of `normal_high_stddev`: that is always\nstation-sourced, this is always grid-sourced. The station product\npublishes no daily precipitation normal at all, so this field comes\nonly from the gridded CONUS product and is **omitted** on any day\nwhose `source` is `station` — which includes every point outside\nCONUS. A series over Alaska or Hawaii carries temperatures with no\nprecipitation until gridded normals exist there.\n\n`0` is a real value and is not the same as omitted: a daily normal\nis a 30-year mean spread across wet and dry days, so much of the\narid West is a few hundredths of an inch. Do not treat a present\nzero as missing data.\n"
        },
        "years": {
          "type": "integer",
          "description": "Years of the base period contributing to this day, at the station.\nStation-sourced on the same terms as `normal_high_stddev`, so it\ndoes not describe the depth of a gridded value.\n"
        },
        "completeness_flag": {
          "type": "string",
          "description": "NCEI per-value completeness code, for the station. Station-sourced\non the same terms as `normal_high_stddev`.\n"
        }
      }
    },
    "ClimateNormalsMeta": {
      "type": "object",
      "description": "Provenance for a normals response.",
      "required": [
        "source",
        "unit"
      ],
      "properties": {
        "normals_period": {
          "type": "string",
          "description": "Base period the normals were computed over."
        },
        "source": {
          "type": "string",
          "description": "Where the values came from: `station` for the NCEI station\nproduct, `grid` for gridded normals, `mixed` when a series draws\non both.\n"
        },
        "normals_method": {
          "type": "string",
          "enum": [
            "official",
            "derived"
          ],
          "description": "How the normals were produced, which `source` does not answer.\n`official` means the provider publishes them as a normals product\n-- true of both the NCEI station normals and the NCEI gridded\nnormals, so a station/grid mix is still wholly official.\n`derived` means they were computed from raw climate data, which is\na weaker claim a client should qualify. Absent when upstream does\nnot report it.\n"
        },
        "unit": {
          "type": "string",
          "enum": [
            "imperial",
            "metric"
          ],
          "description": "Unit system applied to the values: °F and inches for `imperial`,\n°C and millimetres for `metric`.\n"
        },
        "approximate": {
          "type": "boolean",
          "description": "True when a station more than 50 km away supplied values that are\nactually being served — `station.distance_km` says how far.\n\nIt is not a plain distance test. A `grid` day is the requested\npoint's own normal, so no station distance makes it approximate,\nand a series whose `source` is `grid` is never flagged however far\nthe named station sits. A `mixed` series is flagged, because the\nstation-sourced days in it genuinely are approximations.\n"
        },
        "missing_days": {
          "type": "integer",
          "description": "How many days in the requested range no normal is available for,\nfrom either the grid or the station. Those days are still present\nin `days` with their temperature fields omitted.\n"
        }
      }
    },
    "ClimateNormalsStation": {
      "type": "object",
      "description": "The station a normals series was drawn from. Normals describe this\nstation, not necessarily the point you asked about.\n",
      "required": [
        "station_id",
        "latitude",
        "longitude",
        "distance_km"
      ],
      "properties": {
        "station_id": {
          "type": "string",
          "description": "GHCN station identifier."
        },
        "name": {
          "type": "string",
          "description": "Station name as published by NCEI."
        },
        "state": {
          "type": "string",
          "description": "Two-letter state or territory code."
        },
        "latitude": {
          "type": "number",
          "format": "double",
          "description": "Station latitude."
        },
        "longitude": {
          "type": "number",
          "format": "double",
          "description": "Station longitude."
        },
        "elevation_m": {
          "type": "number",
          "format": "double",
          "description": "Station elevation in metres. Worth comparing against your point:\nan elevation difference biases normals more than distance does.\n"
        },
        "distance_km": {
          "type": "number",
          "format": "double",
          "description": "Great-circle distance from the requested point to the station,\nrounded to 0.1 km. The single number that says how much to trust\nthis series.\n"
        }
      }
    },
    "Current": {
      "type": "object",
      "description": "Current weather conditions derived from the RTMA + MRMS blend.\n",
      "required": [
        "time",
        "conditions",
        "icon"
      ],
      "properties": {
        "time": {
          "type": "string",
          "format": "date-time",
          "description": "Observation valid time (ISO 8601, UTC) of the analysis behind `temperature`, or the response time when no fresh observation is available."
        },
        "temperature": {
          "type": [
            "number",
            "null"
          ],
          "format": "double",
          "description": "Temperature (unit per `units.temperature`). Null only when no source in the current chain resolves it."
        },
        "feels_like": {
          "type": [
            "number",
            "null"
          ],
          "format": "double",
          "description": "Feels-like temperature: the air temperature unless wind chill (50°F or below, wind 3 mph or more) or heat index (80°F or above, relative humidity 40% or more) applies. Null when the index that applies lacks its input and no forecast apparent temperature covers now; never derived from an unknown value."
        },
        "humidity": {
          "type": [
            "number",
            "null"
          ],
          "format": "double",
          "minimum": 0,
          "maximum": 100,
          "description": "Relative humidity, percent. Null only when no source in the current chain resolves it."
        },
        "dew_point": {
          "type": [
            "number",
            "null"
          ],
          "format": "double",
          "description": "Dew point (unit per `units.temperature`). Null only when no source in the current chain resolves it, or its derivation lacks the temperature or humidity."
        },
        "pressure": {
          "type": [
            "number",
            "null"
          ],
          "format": "double",
          "description": "Sea-level pressure (unit per `units.pressure`): the quantity US NWS stations report in the METAR SLP group. From the observation-anchored RTMA analysis, its station pressure reduced to sea level with the WMO CIMO Guide 3.11 formula and the FMH-1 12-hour mean temperature; else the GFS mean-sea-level pressure field at now. Not the altimeter setting and not station pressure. Null only when neither source is fresh."
        },
        "wind_speed": {
          "type": [
            "number",
            "null"
          ],
          "format": "double",
          "description": "Sustained wind speed; `0` is calm (below 1 knot, FMH-1 5.5.2: served as `0` in every unit system). Null only when no source in the current chain resolves it."
        },
        "wind_gust": {
          "type": [
            "number",
            "null"
          ],
          "format": "double",
          "description": "Wind gust, served only next to a non-calm `wind_speed`. Null when no source carries a gust, or the wind is calm or unknown."
        },
        "wind_direction": {
          "type": [
            "integer",
            "null"
          ],
          "minimum": 0,
          "maximum": 360,
          "description": "Wind direction in degrees (0 = N, 90 = E). Null when calm (`wind_speed` 0) and when no source resolves it."
        },
        "visibility": {
          "type": [
            "number",
            "null"
          ],
          "format": "double",
          "description": "Visibility distance (null when no station or model value is available)."
        },
        "cloud_cover": {
          "type": [
            "number",
            "null"
          ],
          "format": "double",
          "minimum": 0,
          "maximum": 100,
          "description": "Cloud cover, percent. Null only when no source in the current chain resolves it."
        },
        "cloud_ceiling": {
          "type": [
            "number",
            "null"
          ],
          "format": "double",
          "minimum": 0,
          "description": "Analysis cloud-base height above ground (RTMA/URMA), in the `units.altitude` unit. Null when no ceiling is reported (clear or high thin cloud) or outside analysis coverage."
        },
        "cloud_cover_low": {
          "type": [
            "number",
            "null"
          ],
          "format": "double",
          "minimum": 0,
          "maximum": 100,
          "description": "HRRR low-cloud-layer cover, percent (CONUS). Present only with `cloud_cover_mid` and `cloud_cover_high` (all three numbers or all three null). Null outside HRRR coverage or before the first post-deploy cycle."
        },
        "cloud_cover_mid": {
          "type": [
            "number",
            "null"
          ],
          "format": "double",
          "minimum": 0,
          "maximum": 100,
          "description": "HRRR mid-cloud-layer cover, percent (CONUS). Same all-three-or-null contract as `cloud_cover_low`."
        },
        "cloud_cover_high": {
          "type": [
            "number",
            "null"
          ],
          "format": "double",
          "minimum": 0,
          "maximum": 100,
          "description": "HRRR high-cloud-layer cover, percent (CONUS). Same all-three-or-null contract as `cloud_cover_low`."
        },
        "uv_index": {
          "type": [
            "number",
            "null"
          ],
          "format": "double"
        },
        "aqi": {
          "type": [
            "integer",
            "null"
          ],
          "description": "Air-quality index (US EPA scale): usually 0-500, can exceed 500\nin extreme events (\"Beyond the AQI\"). `null` when AirNow has no\nvalue at the point, or when its latest observation is older than\nthe source's freshness limit (currently 3 hours for AirNow). The\nstale case also adds a `stale_source` warning to `meta.warnings`\n(`section: current`, `product_id: airquality_combined`), which\ntells the two apart. The product's age is the `meta.freshness`\nentry with the same `product_id`. A reported 0 is currently also\nserved as `null`: AirNow stores cells outside its coverage as 0,\nso a 0 cannot yet be told from no data.\n"
        },
        "aqi_category": {
          "type": "string",
          "description": "Human-readable AQI category (e.g., `\"Good\"`, `\"Moderate\"`,\n`\"Unhealthy for Sensitive Groups\"`). Omitted when AQI is\nunavailable.\n"
        },
        "pm25": {
          "type": [
            "number",
            "null"
          ],
          "format": "double",
          "description": "AirNow AQI sub-index for PM2.5, on the same scale as `aqi`:\nusually 0-500, can exceed 500 in extreme events. Integer-valued\nat the source; a value may show a small fractional error, so\nround to a whole number. Not a concentration: the field name\nnames the pollutant and is kept for compatibility. `null` when\nAirNow has no value at the point, when its latest hour is stale\n(reported by a `stale_source` warning, see `aqi`), or when the\nreported value is 0 (currently indistinguishable from no data,\nsee `aqi`).\n"
        },
        "ozone": {
          "type": [
            "number",
            "null"
          ],
          "format": "double",
          "description": "AirNow AQI sub-index for ozone, on the same scale as `aqi`:\nusually 0-500, can exceed 500 in extreme events. Integer-valued\nat the source; a value may show a small fractional error, so\nround to a whole number. Not a concentration: the field name\nnames the pollutant and is kept for compatibility. `null` when\nAirNow has no value at the point, when its latest hour is stale\n(reported by a `stale_source` warning, see `aqi`), or when the\nreported value is 0 (currently indistinguishable from no data,\nsee `aqi`).\n"
        },
        "pm10": {
          "type": [
            "number",
            "null"
          ],
          "format": "double",
          "description": "AirNow AQI sub-index for PM10, on the same scale as `aqi`:\nusually 0-500, can exceed 500 in extreme events. Integer-valued\nat the source; a value may show a small fractional error, so\nround to a whole number. Not a concentration: the field name\nnames the pollutant and is kept for compatibility. `null` when\nAirNow has no value at the point, when its latest hour is stale\n(reported by a `stale_source` warning, see `aqi`), or when the\nreported value is 0 (currently indistinguishable from no data,\nsee `aqi`).\n"
        },
        "precip_rate": {
          "type": [
            "number",
            "null"
          ],
          "format": "double",
          "description": "Current precipitation rate per hour. `0` when dry (`precip_type` `none`); null when neither radar nor a forecast source covers the point now."
        },
        "precip_type": {
          "type": "string",
          "enum": [
            "none",
            "rain",
            "snow",
            "mix",
            "freezing_rain",
            "hail",
            "unknown"
          ],
          "description": "Current precipitation type: MRMS radar where it covers the point,\nelse the current chain's forecast type at now, which is served\nonly with a measurable rate (0.01 in per hour); below it, `none`.\n`none` is a known dry reading. Omitted when neither radar nor a\nforecast source covers the point now. Radar serves\n`freezing_rain` and `mix` where its rain or snow is reclassified\nby the analysis wet-bulb. `mix` is rain and snow, ice pellets,\nor a wintry mix; `hail` and `unknown` are reserved and not\ncurrently served.\n"
        },
        "precip_24h": {
          "type": [
            "number",
            "null"
          ],
          "format": "double",
          "x-stability": "experimental",
          "description": "Observed precipitation accumulated over the trailing 24 hours,\nfrom MRMS MultiSensor QPE Pass 2. The window ends at the\nproduct's valid time, listed under `meta.freshness`. Always\nmillimetres regardless of `units`. CONUS only; `null` outside\nCONUS, when no sample is available, or when the sample's valid\ntime is older than the product's hourly-cadence staleness\nwindow (currently 3 hours, the same window `/v1/point` uses to\nmark it approximate). Source resolution is about 2 mm.\n\n**Experimental.** May change without notice: excluded from the\n90-day breaking-change commitment.\n"
        },
        "lightning_density": {
          "type": [
            "number",
            "null"
          ],
          "format": "double",
          "description": "Lightning strike density (strikes per unit area per time window)."
        },
        "lightning_prob": {
          "type": [
            "integer",
            "null"
          ],
          "minimum": 0,
          "maximum": 100,
          "description": "Lightning probability, percent."
        },
        "conditions": {
          "type": "string",
          "description": "Human-readable weather description. Empty string when neither the sky (cloud cover) nor precipitation is known."
        },
        "icon": {
          "type": "string",
          "description": "Icon slug for UI rendering. Empty string exactly when `conditions` is."
        },
        "severe": {
          "type": "boolean",
          "description": "True when severe conditions are present or imminent.",
          "default": false
        }
      }
    },
    "Daily": {
      "type": "object",
      "description": "Single daily forecast entry. Per-period weather (temperature, wind,\nprecipitation, narrative) lives in `day` / `night`, the row's local\n06:00-18:00 and 18:00-06:00 halves, so a row spans 06:00 local on\n`date` to 06:00 local the next day rather than the calendar day.\nPrecipitation, snow and ice totals are built on that

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# Full source: https://artifacts.apis.io/smarterweather-com/json-schema/smarterweather-com-weather-schema.json