Open-Meteo review
A free, open-source API suite for developers needing broad weather and climate data.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Open-Meteo is an open-source weather-data service for developers and organizations that need programmatic access to forecasts, historical records, climate information, air quality, marine conditions, or location search. Its HTTP APIs return machine-readable data for coordinates, making it suitable for solo developers through enterprise teams building weather-aware applications. Cloud deployment and web and API access support projects that want to integrate data into their own products rather than operate a standalone weather interface.
The Free API plan is free for non-commercial use and requires no API key, lowering the barrier for prototypes, research, and community projects. Commercial service options are available separately. The API surface covers numerical forecasts, historical weather, climate datasets, air-quality forecasts and history, marine forecasts, and geocoding. Open-source software and data services allow technical teams to inspect and incorporate the project within their broader stack. Documentation and community support are the listed support channels, so onboarding is oriented toward developers who are comfortable working from API documentation.
Open-Meteo’s main gap is the absence of weather alerts, which matters for products that need official warning or notification workflows. The service is also centered on API delivery, so teams seeking a ready-made operational dashboard may need to build that experience themselves. Choose Open-Meteo when broad data access, open-source licensing, and free non-commercial use are priorities. Consider an alternative when alert feeds, a non-technical user interface, or built-in AI capabilities are required.
Open-Meteo pros and cons
- Where it wins
- Forecast, historical, and climate APIs in one service
- Air-quality, marine, and geocoding APIs extend coverage
- Open source with free non-commercial access and no API key
- Where it doesn't
- No weather-alert API for alert-driven applications
- Free API access is limited to non-commercial use
- No built-in AI features
Open-Meteo fact sheet, pricing and score →
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