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Open-Meteo Air Quality

Science Data No key

AuthenticationNo key
Rate limitFree tier allows thousands of requests per day; no key required.

Documentation: open-meteo.com ยท Checked Sep 13, 2026

About

Open-Meteo's air-quality API is a free, no-key companion to its popular weather API. Give it coordinates and get the US or European air quality index, PM2.5, ozone, pollen levels, and dust forecasts. It is built for developers and hobbyists, with generous free limits and no signup.

Details

No key needed. You can call it right away.

Auth: No key

Rate limit: Free tier allows thousands of requests per day; no key required.

Verified: 2026-09-13

Best for: personal developer fun

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Setup

  1. Paste the example URL into your browser to get LA air quality instantly, no signup needed.
  2. Replace the latitude and longitude with your location.
  3. Add hourly or current parameters for pollutants, pollen, or AQI.
  4. Combine with the main Open-Meteo weather API for a full forecast dashboard.
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