Open-Meteo provides high-quality historical weather data using a combination of global and regional weather models.

For Canada and North America, it mainly relies on:

• ✅ GEM (Global Environmental Multiscale Model) — from ECCC, approx. 2.5–10 km spatial resolution.
• ✅ GFS (Global Forecast System) — from NOAA (U.S.), ~13 km global resolution.
• ✅ ICON — from DWD, ~13 km global resolution.

Open-Meteo automatically selects the best available model with the finest resolution for the location and time range you request.

🔍 Estimated data precision for historical/recent records:

• Wind speed: ±1–2 m/s (±3–7 km/h)
• Wind direction: ±10–30 degrees
• Temperature: ±1–2°C