Free weather API for non-commercial use.
Open-Meteo API is a free Environment API that requires no API key, is served over HTTPS and supports CORS, so it can be called from the browser.
Open-Source ☀️ Weather API with free access for non-commercial use. No API Key required ✅. Accurate weather forecasts for any location. Open-Meteo provides high-resolution open data ranging from 1 to 11 kilometres from national weather services. With a user-friendly JSON API, integrating weather da…
Details from open-meteo.com.

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The Open-Meteo API is provided by Open-Meteo.com (open-meteo.com). Open-Source ☀️ Weather API with free access for non-commercial use. No API Key required ✅. Accurate weather forecasts for any location. Open-Meteo provides high-resolution open data ranging from 1 to 11 kilometres from national weather services. With a user-friendly JSON API, integrating weather da…
Yes. The Open-Meteo API is listed in the Environment category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
No. The Open-Meteo API requires no authentication, so you can start making requests without signing up.
Yes. The Open-Meteo API supports CORS, so front-end JavaScript can call it directly.
Yes. The Open-Meteo API is served over HTTPS, so it's safe to use in production.