Hourly temps come from Open-Meteo's model analysis: real observations from ground stations and satellites, aggregated into a best estimate. Typically within 1–2°C of a nearby station.

Future weather comes from Open-Meteo's GFS/ECMWF ensemble forecast.

Tap any card in the past 7 days strip to see how the GFS model forecast compared to what actually happened. For major cities, Past Skies captures this snapshot automatically every day at noon. For all other cities, it's saved from the first time you search that city onwards.

Past Skies automatically detects your location via GPS when you open it. You can search any city or tap "My location" to switch back. No account or sign-in needed.