Forecast merge

LocalSky never trusts a single forecast. Configured forecast sources (Open-Meteo by default; NWS, MET Norway, OpenWeather, Pirate Weather optional) are merged by priority with per-field fallback, then bias-corrected against what your own station actually measured: if the model consistently runs 2 degrees hot over your yard in July, the merge learns that and compensates, per field, per calendar month.

The hourly canvas shows 48 hours of temperature, precipitation probability and amount, wind, and cloud cover. The 7-day row feeds the verdict strip. Forecast-aware skip rules read the same merged data, so the number you see is the number the engine acted on.

Sources are health-tracked: a polled model is “fresh” within its poll cadence (about 30 minutes for Open-Meteo) and the merge fails over to the next source when one goes quiet.

Choosing your forecast source

An install with no hardware uses Open-Meteo automatically (free, no API key), so you see a forecast immediately; it is the recommended zero-config pick. To drive the forecast pipeline with a different provider, open Settings > Devices > Data sources and use the forecast source picker. “Automatic” keeps Open-Meteo as the low-priority failover; selecting a provider (NWS, Pirate Weather, MET Norway, OpenWeather, or any enabled forecast-capable source) pins it to win regardless of the per-source priority ranking. If the pinned source goes offline the forecast still works by falling back to the next source, so a pin never blanks the forecast.