Open-Meteo is an open-source weather API and offers free access for non-commercial use. No API key is required. You can use it immediately!
Open-Meteo utilizes open-data weather forecasts provided by national weather services. These services offer numerical weather predictions that are free to download. However, working with these models can be challenging, as it requires expertise in binary file formats, grid-systems, projections, and the fundamentals of weather predictions.
Like many other weather APIs, Open-Meteo integrates high-resolution local and global weather models. Over 2 TB of data are downloaded and processed daily from multiple national weather services. The collected data is then stored in local files using a customized file format and compression technique to enhance access to time-series data such as a 14-day temperature forecast.
In contrast to other weather APIs, Open-Meteo provides complete access to its source code, and all data sources are openly listed, crediting the national weather services for their work. With Docker or prebuilt Ubuntu packages, it is possible to launch your own weather API within minutes. By providing the source code, users can conduct detailed verifications of the weather data processing and even make modifications themselves. Contributions are highly encouraged and welcomed.
The API is available for non-commercial use at no cost. Despite being free of charge, the forecast accuracy is top-notch. The API utilizes a vast array of local weather models with rapid updates, ensuring that the most precise forecast is generated for any location globally.
Do you use Open-Meteo? Please open a pull request and add your repository or app to the list!
Contributions welcome! Writing a SDK for Open-Meteo is more than welcome and a great way to help users.
If you encounter bugs while using Open-Meteo APIs, please file a new issue ticket. For general ideas or Q&A please use the Discussion section on Github. Thanks!
For other enquiries please contact [email protected]
Instructions to use Docker to run your own weather API are available in the getting started guide.
Open-Meteo APIs are free for open-source developer and non-commercial use. We do not restrict access, but ask for fair use.
If your application exceeds 10'000 requests per day, please contact us. We reserve the right to block applications and IP addresses that misuse our service.
For commercial use of Open-Meteo APIs, please contact us.
All data is provided as is without any warranty.
We do not collect any personal data. We do not share any personal information. We do not integrate any third party analytics, ads, beacons or plugins.
API data are offered under Attribution 4.0 International (CC BY 4.0)
You are free to share: copy and redistribute the material in any medium or format and adapt: remix, transform, and build upon the material.
Attribution: You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
You must include a link next to any location, Open-Meteo data are displayed like:
Open-Meteo is open-source under the GNU Affero General Public License Version 3 (AGPLv3) or any later version. You can find the license here. Exceptions are third party source-code with individual licensing in each file.