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GET
Weather Forecast
Fetch a weather forecast for any WGS84 coordinate from Open-Meteo’s blended high-resolution model mix. Choose the fields you want with hourly, daily and current (comma-separated variable lists) — e.g. temperature_2m, precipitation, wind_speed_10m for hourly, or temperature_2m_max/precipitation_sum for daily. Control the horizon with forecast_days (up to 16) and past_days, and set timezone=auto to localize daily aggregates. The response returns the resolved grid-cell latitude/longitude/elevation, timezone metadata, and a block per requested resolution (hourly, daily, current) each with a parallel time array plus one array per variable, alongside a matching *_units object. Example: GET /apis/v1/openmeteo/forecast?latitude=52.52&longitude=13.41&hourly=temperature_2m,precipitation&daily=temperature_2m_max,temperature_2m_min&current=temperature_2m,weather_code&timezone=Europe/Berlin. Billing: $0.00015 per call (150 micros USD), metered per request. All Open-Meteo endpoints are GET pass-through — authenticate with your AIsa API key as a bearer token (the same key used across every AIsa /apis/* endpoint); AIsa handles provider access.

Authorizations

Authorization
string
header
required

Bearer authentication header of the form Bearer <token>, where <token> is your auth token.

Query Parameters

latitude
string
required

WGS84 latitude of the location. Multiple coordinates can be comma-separated.

Example:

"52.52"

longitude
string
required

WGS84 longitude of the location (negative for the Americas). Multiple coordinates can be comma-separated.

Example:

"13.41"

hourly
string

Comma-separated list of hourly variables to return. Common values: temperature_2m, relative_humidity_2m, dew_point_2m, apparent_temperature, precipitation, rain, showers, snowfall, weather_code, pressure_msl, cloud_cover, wind_speed_10m, wind_direction_10m, wind_gusts_10m, shortwave_radiation, visibility.

Example:

"temperature_2m,precipitation,wind_speed_10m"

daily
string

Comma-separated list of daily aggregation variables to return. Requires timezone. Common values: temperature_2m_max, temperature_2m_min, temperature_2m_mean, precipitation_sum, rain_sum, snowfall_sum, weather_code, sunrise, sunset, sunshine_duration, wind_speed_10m_max, uv_index_max.

Example:

"temperature_2m_max,temperature_2m_min,precipitation_sum"

current
string

Comma-separated list of current-condition variables to return. Common values: temperature_2m, relative_humidity_2m, apparent_temperature, is_day, precipitation, weather_code, wind_speed_10m, wind_direction_10m.

Example:

"temperature_2m,weather_code"

minutely_15
string

Comma-separated 15-minutely variables (Central Europe & North America high-resolution models only).

Example:

"temperature_2m,precipitation"

forecast_days
integer
default:7

Number of forecast days to return (0-16). Default 7.

Example:

7

past_days
integer
default:0

Number of past days to include (0-92). Default 0.

forecast_hours
integer

Limit the forecast to a given number of hours from now.

past_hours
integer

Include a given number of past hours.

start_date
string<date>

Start of the interval, yyyy-mm-dd (ISO 8601).

Example:

"2024-01-01"

end_date
string<date>

End of the interval, yyyy-mm-dd (ISO 8601).

Example:

"2024-01-07"

elevation
string

Manual elevation (meters) for statistical downscaling. Defaults to a 90m DEM. Use nan to disable downscaling.

Example:

"38"

temperature_unit
enum<string>
default:celsius

Temperature unit. Default celsius.

Available options:
celsius,
fahrenheit
wind_speed_unit
enum<string>
default:kmh

Wind speed unit. Default kmh.

Available options:
kmh,
ms,
mph,
kn
precipitation_unit
enum<string>
default:mm

Precipitation unit. Default mm.

Available options:
mm,
inch
timeformat
enum<string>
default:iso8601

Time output format. Default iso8601.

Available options:
iso8601,
unixtime
models
string

Comma-separated forecast models to use. Default auto selects the best model mix per location.

Example:

"auto"

timezone
string

IANA time zone name (e.g. Europe/Berlin) or auto to resolve from coordinates. Defaults to GMT.

Example:

"Europe/Berlin"

cell_selection
enum<string>
default:land

Grid-cell preference for the coordinate. Default land.

Available options:
land,
sea,
nearest

Response

200 - application/json

Requested weather forecast for the coordinate.

The response is of type object.