Oct 13, 2026

Where the forecasts come from

A weather app is only as good as its data. METE0RA doesn't invent anything: it shows the forecasts made by national weather services, the same supercomputer models meteorologists work with.

The models

• ECMWF, the European Centre for Medium-Range Weather Forecasts, often called the best global model.
• DWD ICON (Germany), Météo-France AROME and ARPEGE, NOAA GFS and HRRR (United States), Environment Canada GEM, JMA (Japan) and MET Norway.

They reach the app through Open-Meteo, an open-source service that gathers these models and, for each place, picks the best one available: a high-resolution local model where there is one, a global model elsewhere. If Open-Meteo can't be reached, METE0RA switches to MET Norway on its own, and when you're offline it shows the last saved forecast with its age.

Everything else

• Air quality and pollen: the European Copernicus atmosphere service (CAMS).
• Waves and sea temperature: Open-Meteo's marine models.
• Rain radar: RainViewer, on OpenStreetMap maps.
• Official warnings: MeteoAlarm for Europe, the DWD for Germany (via Bright Sky), the National Weather Service for the United States.

The moon phase, sunrise and sunset, golden hour and the height of the sun are calculated on your device. Every source is credited in the app, under "Sources".