openapi: 3.0.0
info:
  title: Open-Meteo Historical Weather API
  description: 'The Historical Weather API is based on reanalysis datasets and uses a combination of weather station, aircraft, buoy, radar, and satellite observations to create a comprehensive record of past weather conditions.'
  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
paths:
  /v1/archive:
    servers:
      - url: https://archive-api.open-meteo.com
    get:
      tags:
      - Historical Weather API
      summary: 60 years of accurate weather, anywhere with up to 5 km resolution
      description: 'The Historical Weather API is based on reanalysis datasets and uses a combination of weather station, aircraft, buoy, radar, and satellite observations to create a comprehensive record of past weather conditions.'
      parameters:
      - name: start_date
        in: query
        required: true
        description: "The time interval to get weather data. A day must be specified as an ISO8601 date (e.g. 2022-01-01)."
        schema:
          type: string
          format: date
      - name: end_date
        in: query
        required: true
        description: "The time interval to get weather data. A day must be specified as an ISO8601 date (e.g. 2022-12-31)."
        schema:
          type: string
          format: date
      - name: hourly
        in: query
        explode: false
        schema:
          type: array
          items:
            type: string
            enum:
            - temperature_2m
            - relative_humidity_2m
            - dew_point_2m
            - apparent_temperature
            - pressure_msl
            - cloud_cover
            - cloud_cover_low
            - cloud_cover_mid
            - cloud_cover_high
            - wind_speed_10m
            - wind_speed_100m
            - wind_direction_10m
            - wind_direction_100m
            - wind_gusts_10m
            - shortwave_radiation
            - direct_radiation
            - direct_normal_irradiance
            - diffuse_radiation
            - vapour_pressure_deficit
            - et0_fao_evapotranspiration
            - precipitation
            - rain
            - weather_code
            - snowfall
            - 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
      - name: daily
        in: query
        schema:
          type: array
          items:
            type: string
            enum:
            - temperature_2m_max
            - temperature_2m_min
            - apparent_temperature_max
            - apparent_temperature_min
            - precipitation_sum
            - precipitation_hours
            - weather_code
            - sunrise
            - sunset
            - wind_speed_10m_max
            - wind_gusts_10m_max
            - wind_direction_10m_dominant
            - shortwave_radiation_sum
            - et0_fao_evapotranspiration
      - name: latitude
        in: query
        required: true
        description: "WGS84 coordinate"
        schema:
          type: number
          format: double
      - name: longitude
        in: query
        required: true
        description: "WGS84 coordinate"
        schema:
          type: number
          format: double
      - 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: timeformat
        in: query
        description: If format `unixtime` is selected, all time values are returned in UNIX epoch time in seconds. Please not that all time is then in GMT+0! For daily values with unix timestamp, please apply `utc_offset_seconds` again to get the correct date.
        schema:
          type: string
          default: iso8601
          enum:
          - iso8601
          - unixtime
      - name: timezone
        in: query
        description: If `timezone` is set, all timestamps are returned as local-time and data is returned starting at 0:00 local-time. Any time zone name from the [time zone database](https://en.wikipedia.org/wiki/List_of_tz_database_time_zones) is supported.
        schema:
          type: string
      responses:
        "200":
          description: OK
          content:
            application/json:
              schema:
                type: object
                properties:
                  latitude:
                    type: number
                    example: 52.52
                    description: WGS84 of the center of the weather grid-cell which was used to generate this forecast. This coordinate might be up to 5 km away.
                  longitude:
                    type: number
                    example: 13.419.52
                    description: WGS84 of the center of the weather grid-cell which was used to generate this forecast. This coordinate might be up to 5 km away.
                  elevation:
                    type: number
                    example: 44.812
                    description: The elevation in meters of the selected weather grid-cell. In mountain terrain it might differ from the location you would expect.
                  generationtime_ms:
                    type: number
                    example: 2.2119
                    description: Generation time of the weather forecast in milli seconds. This is mainly used for performance monitoring and improvements.
                  utc_offset_seconds:
                    type: integer
                    example: 3600
                    description: Applied timezone offset from the &timezone= parameter.
                  hourly:
                    type: object
                    description: For each selected weather variable, data will be returned as a floating point array. Additionally a `time` array will be returned with ISO8601 timestamps.
                  hourly_units:
                    type: object
                    description: For each selected weather variable, the unit will be listed here.
                  daily:
                    type: object
                    description: For each selected daily weather variable, data will be returned as a floating point array. Additionally a `time` array will be returned with ISO8601 timestamps.
                  daily_units:
                    type: object
                    description: For each selected daily weather variable, the unit will be listed here.
        "400":
          description: Bad Request
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: boolean
                    description: Always set true for errors
                  reason:
                    type: string
                    description: Description of the error
                    example: "Latitude must be in range of -90 to 90°. Given: 300"