Free Weather APIs

7 free APIs that don't require authentication

Browse our collection of free weather APIs. Each API includes detailed documentation, example requests, and usage guides. Click on any API to learn more.

Open-Meteo Weather

Free weather forecast API with no authentication required. Provides current weather, forecasts, and historical data for worldwide locations.

Weather No Auth Works in: global

USGS Earthquakes

Free USGS Earthquake API providing real-time earthquake data worldwide. GeoJSON format with magnitude, location, depth, and time. No API key needed.

Weather No Auth Works in: global

wttr.in

Free weather API with a curl-friendly interface. Returns JSON or plain text weather reports for any location worldwide. No API key needed.

Weather No Auth Works in: global