Coverage
Most of Europe: wherever European weather radar sees rain. Outside it, the API says so instead of guessing.
- Radar coverage
- No radar: no forecast
Where the forecast comes from
Nimbo forecasts from the radar images Europe’s national weather services share with each other. It issues a new forecast every 10 minutes, on a 2 km grid.
Known gaps
- Italy. Italy’s own radars are not shared with the rest of Europe. The footprint reaches into much of Italy only because radars in neighbouring countries see it from far away, where light rain is missed; the far south and Sicily are outside. Treat forecasts for Italy as weaker than elsewhere.
- Portugal’s edges and Spain’s east coast. Not every radar is shared all the time, so parts of the north or the south of Portugal, and of Spain’s east coast, drop out on some days. In Spain, national radars fill such gaps (the API says so in
radar_source); in Portugal, nothing fills them yet. - The edges of the map. Far out at sea and at the outer rim of the network, rain can only be seen once it is inside: forecasts there can miss rain that arrives from beyond the edge.
- Snow. Radar sees snow too, but Nimbo does not yet tell rain and snow apart: every value is reported as rain.
Outside the coverage
The point API answers coverage: "no_radar" with no summary and no rates, or 404 out_of_coverage for points outside the forecast area altogether. Map tiles are transparent there. Nimbo never fills a hole with a guess from a weather model.
More on how Europe’s radars are shared: radar coverage in Europe.