Open-Meteo provides global weather data without requiring an API key.
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Offers free open endpoints. Fair-usage limits may apply for heavy traffic. Air quality endpoint is served from a separate host (air-quality-api.open-meteo.com).
Last verified: February 14, 2026
Other APIs in the same category usable from Türkiye.
Public test lab configuration summary for this API.
https://api.open-meteo.com/Methods
Verified endpoint examples
v1/forecastIstanbul current weather
Returns real-time temperature, wind, and humidity for Istanbul.
v1/forecastIstanbul hourly forecast
Returns 2-day hourly forecast data for Istanbul.
https://air-quality-api.open-meteo.com/v1/air-qualityAnkara air quality
Returns hourly PM and gas-based air quality metrics for Ankara (timezone is selected automatically).
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