Data sources

We attribute every source and use them within their licenses.

• Forecasts & history: Open-Meteo (CC-BY 4.0) — open weather-model data, including the archive since 1940.
• Global & marine model: met.no (Norwegian Meteorological Institute, CC-BY).
• United States: NWS / api.weather.gov (public domain).
• Air quality & pollen: Open-Meteo Air Quality (CAMS). Pollen data covers Europe only and is shown only where available.
• Marine (sea temperature & waves): Open-Meteo Marine API.
• Severe-weather events & alerts: GDACS, NWS alerts (US), MeteoAlarm (Europe) and national meteorological services.
• Geomagnetic activity (aurora): NOAA SWPC.
• Maps: MapTiler / OpenStreetMap (base tiles) and RainViewer (precipitation radar).
• Place names: GeoNames (CC-BY 4.0).