Open-Meteo
Forecasts and history without key
Last verified: 1 October 2026
Free weather APIs based on over 30 models: forecast, historical, climate, marine, air quality, flood, geocoding and elevation. Plain HTTP GET requests returning JSON, CSV or XLSX. Data under CC BY 4.0, server code under AGPLv3.
Services
- Weather Forecast API
- Historical Weather API
- Marine Weather and Air Quality APIs
- Flood and Climate Change APIs
- Geocoding and Elevation APIs
Access requirements
No key, no sign-up, no credit card for non-commercial use up to 10,000 calls per day; subscription beyond that or for commercial use.
Sandbox: Yes
Sources
- Open-Meteo (new tab), verified on 1 October 2026Official site consulted