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OpenAPI Specification

openapi: 3.2.0
info:
  title: Open-Meteo Air Quality Air Quality Ensemble Forecast APIs API
  description: Hourly air quality forecasts for PM2.5, PM10, ozone, nitrogen dioxide, pollen, and other pollutants from the Copernicus Atmosphere Monitoring Service (CAMS).
  version: '1.0'
  contact:
    name: Open-Meteo
    url: https://open-meteo.com
    email: info@open-meteo.com
  license:
    name: Attribution 4.0 International (CC BY 4.0)
    url: https://creativecommons.org/licenses/by/4.0/
  termsOfService: https://open-meteo.com/en/features#terms
servers:
- url: https://api.open-meteo.com
  description: Base URL declared by the provider in apis.yml (roadmap#122).
tags:
- name: Ensemble Forecast APIs
paths:
  /v1/ensemble:
    servers:
    - url: https://ensemble-api.open-meteo.com
    - url: https://customer-ensemble-api.open-meteo.com
    get:
      tags:
      - Ensemble Forecast APIs
      summary: Open-Meteo Ensemble Weather Forecast API
      description: Ensemble weather forecasts from multiple models providing probabilistic forecast data.
      parameters:
      - name: latitude
        in: query
        required: true
        description: Geographical WGS84 coordinates. Multiple coordinates can be comma separated.
        schema:
          type: string
      - name: longitude
        in: query
        required: true
        schema:
          type: string
      - name: hourly
        in: query
        description: A list of weather variables which should be returned.
        explode: false
        schema:
          type: array
          items:
            type: string
            enum:
            - temperature_2m
            - relative_humidity_2m
            - dew_point_2m
            - apparent_temperature
            - precipitation
            - rain
            - snowfall
            - snow_depth
            - weather_code
            - pressure_msl
            - surface_pressure
            - cloud_cover
            - cloud_cover_low
            - cloud_cover_mid
            - cloud_cover_high
            - visibility
            - et0_fao_evapotranspiration
            - vapour_pressure_deficit
            - wind_speed_10m
            - wind_speed_80m
            - wind_speed_100m
            - wind_speed_120m
            - wind_direction_10m
            - wind_direction_80m
            - wind_direction_100m
            - wind_direction_120m
            - wind_gusts_10m
            - temperature_80m
            - temperature_120m
            - surface_temperature
            - soil_temperature_0_to_10cm
            - soil_temperature_10_to_40cm
            - soil_temperature_40_to_100cm
            - soil_temperature_100_to_200cm
            - soil_moisture_0_to_10cm
            - soil_moisture_10_to_40cm
            - soil_moisture_40_to_100cm
            - soil_moisture_100_to_200cm
            - soil_temperature_0_to_7cm
            - soil_temperature_7_to_28cm
            - soil_temperature_28_to_100cm
            - soil_temperature_100_to_255cm
            - soil_moisture_0_to_7cm
            - soil_moisture_7_to_28cm
            - soil_moisture_28_to_100cm
            - soil_moisture_100_to_255cm
            - is_day
            - uv_index
            - uv_index_clear_sky
            - temperature_2m_min
            - temperature_2m_max
            - wet_bulb_temperature_2m
            - cape
            - convective_inhibition
            - freezing_level_height
            - snowfall_height
            - sunshine_duration
            - snowfall_water_equivalent
            - snow_depth_water_equivalent
            - boundary_layer_height
            - shortwave_radiation
            - direct_radiation
            - diffuse_radiation
            - direct_normal_irradiance
            - global_tilted_irradiance
            - shortwave_radiation_instant
            - direct_radiation_instant
            - diffuse_radiation_instant
            - direct_normal_irradiance_instant
            - global_tilted_irradiance_instant
            - temperature_1000hPa
            - temperature_925hPa
            - temperature_850hPa
            - temperature_700hPa
            - temperature_600hPa
            - temperature_500hPa
            - temperature_400hPa
            - temperature_300hPa
            - temperature_250hPa
            - temperature_200hPa
            - temperature_150hPa
            - temperature_100hPa
            - temperature_50hPa
            - relative_humidity_1000hPa
            - relative_humidity_925hPa
            - relative_humidity_850hPa
            - relative_humidity_700hPa
            - relative_humidity_600hPa
            - relative_humidity_500hPa
            - relative_humidity_400hPa
            - relative_humidity_300hPa
            - relative_humidity_250hPa
            - relative_humidity_200hPa
            - relative_humidity_150hPa
            - relative_humidity_100hPa
            - relative_humidity_50hPa
            - dew_point_1000hPa
            - dew_point_925hPa
            - dew_point_850hPa
            - dew_point_700hPa
            - dew_point_600hPa
            - dew_point_500hPa
            - dew_point_400hPa
            - dew_point_300hPa
            - dew_point_250hPa
            - dew_point_200hPa
            - dew_point_150hPa
            - dew_point_100hPa
            - dew_point_50hPa
            - cloud_cover_1000hPa
            - cloud_cover_925hPa
            - cloud_cover_850hPa
            - cloud_cover_700hPa
            - cloud_cover_600hPa
            - cloud_cover_500hPa
            - cloud_cover_400hPa
            - cloud_cover_300hPa
            - cloud_cover_250hPa
            - cloud_cover_200hPa
            - cloud_cover_150hPa
            - cloud_cover_100hPa
            - cloud_cover_50hPa
            - wind_speed_1000hPa
            - wind_speed_925hPa
            - wind_speed_850hPa
            - wind_speed_700hPa
            - wind_speed_600hPa
            - wind_speed_500hPa
            - wind_speed_400hPa
            - wind_speed_300hPa
            - wind_speed_250hPa
            - wind_speed_200hPa
            - wind_speed_150hPa
            - wind_speed_100hPa
            - wind_speed_50hPa
            - wind_direction_1000hPa
            - wind_direction_925hPa
            - wind_direction_850hPa
            - wind_direction_700hPa
            - wind_direction_600hPa
            - wind_direction_500hPa
            - wind_direction_400hPa
            - wind_direction_300hPa
            - wind_direction_250hPa
            - wind_direction_200hPa
            - wind_direction_150hPa
            - wind_direction_100hPa
            - wind_direction_50hPa
            - vertical_velocity_1000hPa
            - vertical_velocity_925hPa
            - vertical_velocity_850hPa
            - vertical_velocity_700hPa
            - vertical_velocity_600hPa
            - vertical_velocity_500hPa
            - vertical_velocity_400hPa
            - vertical_velocity_300hPa
            - vertical_velocity_250hPa
            - vertical_velocity_200hPa
            - vertical_velocity_150hPa
            - vertical_velocity_100hPa
            - vertical_velocity_50hPa
            - geopotential_height_1000hPa
            - geopotential_height_925hPa
            - geopotential_height_850hPa
            - geopotential_height_700hPa
            - geopotential_height_600hPa
            - geopotential_height_500hPa
            - geopotential_height_400hPa
            - geopotential_height_300hPa
            - geopotential_height_250hPa
            - geopotential_height_200hPa
            - geopotential_height_150hPa
            - geopotential_height_100hPa
            - geopotential_height_50hPa
      - name: daily
        in: query
        description: A list of daily weather variable aggregations.
        explode: false
        schema:
          type: array
          items:
            type: string
            enum:
            - temperature_2m_mean
            - temperature_2m_min
            - temperature_2m_max
            - apparent_temperature_mean
            - apparent_temperature_min
            - apparent_temperature_max
            - wind_speed_10m_mean
            - wind_speed_10m_min
            - wind_speed_10m_max
            - wind_direction_10m_dominant
            - wind_gusts_10m_mean
            - wind_gusts_10m_min
            - wind_gusts_10m_max
            - wind_speed_100m_mean
            - wind_speed_100m_min
            - wind_speed_100m_max
            - wind_direction_100m_dominant
            - cloud_cover_mean
            - cloud_cover_min
            - cloud_cover_max
            - precipitation_sum
            - precipitation_hours
            - rain_sum
            - snowfall_sum
            - pressure_msl_mean
            - pressure_msl_min
            - pressure_msl_max
            - surface_pressure_mean
            - surface_pressure_min
            - surface_pressure_max
            - relative_humidity_2m_mean
            - relative_humidity_2m_min
            - relative_humidity_2m_max
            - cape_mean
            - cape_min
            - cape_max
            - dew_point_2m_mean
            - dew_point_2m_min
            - dew_point_2m_max
            - et0_fao_evapotranspiration
            - shortwave_radiation_sum
      - name: elevation
        in: query
        schema:
          type: number
          format: float
      - name: temperature_unit
        in: query
        schema:
          type: string
          default: celsius
          enum:
          - celsius
          - fahrenheit
      - name: wind_speed_unit
        in: query
        schema:
          type: string
          default: kmh
          enum:
          - kmh
          - ms
          - mph
          - kn
      - name: precipitation_unit
        in: query
        schema:
          type: string
          default: mm
          enum:
          - mm
          - inch
      - name: timeformat
        in: query
        description: If format unixtime is selected, all time values are returned in UNIX epoch time.
        schema:
          type: string
          default: iso8601
          enum:
          - iso8601
          - unixtime
      - name: timezone
        in: query
        description: Any IANA time zone name is supported. Use auto to resolve the local time zone.
        schema:
          type: string
      - name: past_days
        in: query
        description: Return past days of data.
        schema:
          type: integer
          default: 0
          minimum: 0
          maximum: 92
      - name: forecast_days
        in: query
        description: Number of forecast days.
        schema:
          type: integer
          default: 7
          minimum: 0
          maximum: 36
      - name: past_hours
        in: query
        schema:
          type: integer
      - name: forecast_hours
        in: query
        schema:
          type: integer
      - name: start_date
        in: query
        description: Start date of the time interval in ISO 8601 format.
        schema:
          type: string
          format: date
      - name: end_date
        in: query
        description: End date of the time interval in ISO 8601 format.
        schema:
          type: string
          format: date
      - name: tilt
        in: query
        description: Slope tilt in degrees for global_tilted_irradiance calculation.
        schema:
          type: number
          format: float
          default: 0
      - name: azimuth
        in: query
        description: Azimuth for global_tilted_irradiance. North=0, East=90, South=180, West=270.
        schema:
          type: number
          format: float
          default: 0
      - name: cell_selection
        in: query
        description: 'Grid cell selection preference: land, sea, or nearest.'
        schema:
          type: string
          enum:
          - land
          - sea
          - nearest
      - name: apikey
        in: query
        description: Only required for commercial subscriptions.
        schema:
          type: string
      - name: models
        in: query
        description: Manually select one or more weather models.
        explode: false
        schema:
          type: array
          items:
            type: string
            enum:
            - icon_seamless_eps
            - icon_global_eps
            - icon_eu_eps
            - icon_d2_eps
            - ncep_gefs_seamless
            - ncep_gefs025
            - ncep_gefs05
            - ncep_aigefs025
            - ecmwf_ifs025_ensemble
            - ecmwf_aifs025_ensemble
            - gem_global_ensemble
            - bom_access_global_ensemble
            - ukmo_global_ensemble_20km
            - ukmo_uk_ensemble_2km
            - meteoswiss_icon_ch1_ensemble
            - meteoswiss_icon_ch2_ensemble
      - name: temporal_resolution
        in: query
        description: 'Aggregate data into larger time intervals. Supported: native, hourly, hourly_3, hourly_6.'
        schema:
          type: string
          enum:
          - native
          - hourly
          - hourly_3
          - hourly_6
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                type: object
                properties:
                  latitude:
                    type: number
                    format: float
                  longitude:
                    type: number
                    format: float
                  elevation:
                    type: number
                    format: float
                  generationtime_ms:
                    type: number
                    format: float
                  utc_offset_seconds:
                    type: integer
                  timezone:
                    type: string
                  timezone_abbreviation:
                    type: string
                  hourly:
                    type: object
                    properties:
                      time:
                        type: array
                        items:
                          type: string
                    additionalProperties:
                      type: array
                      items:
                        type: number
                        format: float
                  hourly_units:
                    type: object
                    properties:
                      time:
                        type: string
                    additionalProperties:
                      type: string
                  daily:
                    type: object
                    properties:
                      time:
                        type: array
                        items:
                          type: string
                    additionalProperties:
                      type: array
                      items:
                        type: number
                        format: float
                  daily_units:
                    type: object
                    properties:
                      time:
                        type: string
                    additionalProperties:
                      type: string
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: boolean
                  reason:
                    type: string