Tomorrow.io · JSON Structure

Weather Values Structure

Map of weather data field names to numeric values for one timestep.

Type: object Properties: 37
WeatherClimateForecastHistorical WeatherAir QualityPollenFireFloodRoutesMap TilesAviationMaritimePublic APIs

WeatherValues is a JSON Structure definition published by Tomorrow.io, describing 37 properties. It conforms to the https://json-structure.org/meta/core/v0/# meta-schema.

Properties

temperature temperatureApparent humidity dewPoint windSpeed windDirection windGust pressureSeaLevel pressureSurfaceLevel precipitationIntensity precipitationProbability precipitationType cloudCover cloudBase cloudCeiling visibility weatherCode uvIndex uvHealthConcern epaIndex epaHealthConcern epaPrimaryPollutant particulateMatter25 particulateMatter10 pollutantO3 pollutantNO2 pollutantCO pollutantSO2 treeIndex grassIndex weedIndex fireIndex solarGHI solarDIF solarDIR moonPhase hailBinary

Meta-schema: https://json-structure.org/meta/core/v0/#

JSON Structure

Raw ↑
{
  "$schema": "https://json-structure.org/meta/core/v0/#",
  "$id": "https://raw.githubusercontent.com/api-evangelist/tomorrow/refs/heads/main/json-structure/weather-values-structure.json",
  "name": "WeatherValues",
  "description": "Map of weather data field names to numeric values for one timestep.",
  "type": "object",
  "properties": {
    "temperature": {
      "type": "double",
      "description": "Air temperature (Celsius for metric, Fahrenheit for imperial).",
      "example": 21.2
    },
    "temperatureApparent": {
      "type": "double",
      "example": 20.4
    },
    "humidity": {
      "type": "double",
      "example": 64.0
    },
    "dewPoint": {
      "type": "double",
      "example": 13.4
    },
    "windSpeed": {
      "type": "double",
      "example": 3.1
    },
    "windDirection": {
      "type": "double",
      "example": 220
    },
    "windGust": {
      "type": "double",
      "example": 6.2
    },
    "pressureSeaLevel": {
      "type": "double",
      "example": 1013.2
    },
    "pressureSurfaceLevel": {
      "type": "double",
      "example": 1010.5
    },
    "precipitationIntensity": {
      "type": "double",
      "example": 0.0
    },
    "precipitationProbability": {
      "type": "double",
      "example": 5
    },
    "precipitationType": {
      "type": "int32",
      "example": 0
    },
    "cloudCover": {
      "type": "double",
      "example": 12
    },
    "cloudBase": {
      "type": "double",
      "example": 1.5
    },
    "cloudCeiling": {
      "type": "double",
      "example": 2.4
    },
    "visibility": {
      "type": "double",
      "example": 16
    },
    "weatherCode": {
      "type": "int32",
      "example": 1000
    },
    "uvIndex": {
      "type": "int32",
      "example": 6
    },
    "uvHealthConcern": {
      "type": "int32",
      "example": 2
    },
    "epaIndex": {
      "type": "int32",
      "example": 42
    },
    "epaHealthConcern": {
      "type": "int32",
      "example": 1
    },
    "epaPrimaryPollutant": {
      "type": "int32",
      "example": 0
    },
    "particulateMatter25": {
      "type": "double",
      "example": 8.4
    },
    "particulateMatter10": {
      "type": "double",
      "example": 14.1
    },
    "pollutantO3": {
      "type": "double",
      "example": 28
    },
    "pollutantNO2": {
      "type": "double",
      "example": 11
    },
    "pollutantCO": {
      "type": "double",
      "example": 0.4
    },
    "pollutantSO2": {
      "type": "double",
      "example": 1
    },
    "treeIndex": {
      "type": "int32",
      "example": 2
    },
    "grassIndex": {
      "type": "int32",
      "example": 1
    },
    "weedIndex": {
      "type": "int32",
      "example": 1
    },
    "fireIndex": {
      "type": "double",
      "example": 8.2
    },
    "solarGHI": {
      "type": "double",
      "example": 480
    },
    "solarDIF": {
      "type": "double",
      "example": 120
    },
    "solarDIR": {
      "type": "double",
      "example": 360
    },
    "moonPhase": {
      "type": "int32",
      "example": 3
    },
    "hailBinary": {
      "type": "int32",
      "example": 0
    }
  },
  "additionalProperties": true
}

Work with this as data

Every JSON Structure here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for json structure

4 MCP tools reach this
  • find_json_structuresBrowse and filter every JSON Structure in the catalog.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This JSON Structure
curl "https://apis.io/api/v1/json-structures/weather-values-structure"
All json structure
curl "https://apis.io/api/v1/json-structures?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

A second provider on the same verified email joins the account you already have.