GeoSphere Austria API

Weather forecasts from the GeoSphere Austria API

Location and Time

Location:

Latitude

Longitude

Timezone

API Mode:

Time:

Forecast days

Past days

Forecast provides the latest, continuously updated weather forecast. By default, we provide forecasts for 3 days, but you can access forecasts for up to 15 days. Use Past Days to include recently archived forecasts.

For older archived forecasts, switch to mode.

You can also check out our Historical Weather API with data going back to 1940.

Hourly Weather Variables

Temperature (2 m)

Relative Humidity (2 m)

Dewpoint (2 m)

Apparent Temperature

Surface Temperature

Maximum Temperature (2 m)

Minimum Temperature (2 m)

Weather code

Precipitation (rain + snow)

Rain

Snowfall

Snow Depth Water Equivalent

Snowfall Height

Sea Level Pressure

Surface Pressure

Cloud Cover Total

Cloud Cover Low

Cloud Cover Mid

Cloud Cover High

Reference Evapotranspiration (ET₀)

Vapour Pressure Deficit

Wind Speed (10 m)

Wind Direction (10 m)

Wind Gusts (10 m)

Daily Weather Variables

Weather code

Maximum Temperature (2 m)

Minimum Temperature (2 m)

Maximum Apparent Temperature (2 m)

Minimum Apparent Temperature (2 m)

Sunshine Duration

Precipitation Sum

Rain Sum

Snowfall Sum

Precipitation Hours

Maximum Wind Speed (10 m)

Maximum Wind Gusts (10 m)

Dominant Wind Direction (10 m)

Shortwave Radiation Sum

Reference Evapotranspiration (ET₀)

Settings

Temperature Unit

Wind Speed Unit

Precipitation Unit

Timeformat

Usage licence:

API Response

Preview:

Download XLSX Download CSV

API URL (Open in new tab or copy this URL into your application)

Data Sources

The high-resolution weather forecast model AROME (Application of Research to Operations at Mesoscale) provides meteorological forecasts for the wider Alpine region on a 2.5-kilometre grid. It is updated every 3 hours and provides forecasts for 60 hours. The AROME model code is being further developed in collaboration with the partner meteorological services of the ACCORD consortium. After 2.5 days, Open-Meteo combines forecasts with the ECMWF IFS HRES 9 km model to provide up to 15 days of forecast.

You can find the update timings in the model updates documentation.
Weather Model	Region	Spatial Resolution	Temporal Resolution	Forecast Length	Update frequency
GeoSphere AROME Austria	Central Europe	2.5 km	Hourly	2.5 days	Every 3 hours

GeoSphere AROME Austria Model Area. Source: Open-Meteo.

Native Model Variables

AROME directly predicts the fields listed below. Open-Meteo retains these fields or uses them to calculate more convenient API variables. AROME provides native relative humidity, a native sunshine duration, hourly minimum and maximum temperature and its own weather symbol.

Native AROME field	Level	Use in the Open-Meteo API
Temperature, hourly minimum and maximum	2 m, surface	temperature_2m, surface_temperature
Relative humidity	2 m	Relative humidity and dew point
U and V wind components, gust components	10 m	Wind speed, direction and wind_gusts_10m
Surface pressure	Surface	pressure_msl and surface_pressure
Total precipitation, rain and snowfall water equivalent	Surface	precipitation, rain, snowfall
Global solar radiation	Surface	Global, direct, diffuse radiation, DNI and GTI
Cloud cover total, low, mid and high	Surface	cloud_cover and the individual layers
Sunshine duration	Surface	sunshine_duration
Weather symbol	Surface	weather_code (converted to WMO codes)
CAPE, convective inhibition, snow depth, snowfall height	Surface	Corresponding API variables

AROME provides no pressure-level data. Beyond 2.5 days the seamless model continues with ECMWF IFS.

Derived Variables

AROME publishes native relative humidity, cloud cover layers, sunshine duration, hourly minimum and maximum temperature and its own weather symbol. Open-Meteo derives the remaining API variables from these native fields.

Derived Variable	How it is derived?
Weather code	GeoSphere's own weather symbol converted to the WMO weather code scheme.
Direct and diffuse solar radiation	Only global horizontal irradiance GHI is native. Diffuse radiation is separated using the Razo, Müller Witwer model; direct radiation is the remainder. DNI, GTI and instant values follow from solar geometry.
Wind speed and direction	Calculated from the native U and V wind components at 10 m.
Snowfall	Native snowfall water equivalent converted with 0.7 cm per mm.
Snowfall height	Native snowfall height converted from metres above ground to metres above sea level, for consistency with other models.
Mean sea-level and surface pressure	Mean sea-level pressure is reduced from the native surface pressure; surface pressure is then re-derived for the requested elevation.
Dew point, vapour pressure deficit and wet bulb temperature	Calculated from native 2 m temperature and relative humidity.
Apparent temperature and reference evapotranspiration ET₀	Combine temperature, humidity, wind speed and solar radiation. ET₀ follows the FAO-56 Penman-Monteith equation.

Sunshine duration is a native field and is not derived. Sunrise, sunset, daylight duration and the day-or-night flag are astronomical calculations. Daily values are aggregated from hourly data.

API Documentation

For a detailed list of all available weather variables please refer to the general Weather Forecast API. Only notable remarks are listed below

Weather codes are used from the GeoSphere von converted to WMO weather codes.
Solar Radiation: GeoSphere supplies only global solar radiation data and does not offer direct or diffuse solar radiation. Open-Meteo applies the separation model from Razo, Müller Witwer to calculate direct radiation from shortwave solar radiation.
Snowfall is given as amount of water equivalent. Open-Meteo assumes a constant conversion factor of 1 mm snow water = 7 snowfall.
Snowfall height has been converted to metre above sea level. GeoSphere provides snowfall height in metre above ground. For consistency with other weather models, it has been converted to metre above sea level.