Dev tools · September 12, 2021
Weather API for non-commercial use
Weather Forecast APIs with weather models from multiple national weather providers, combining the best models for accurate forecasts worldwide. Explore the API documentation to learn more about the available weather models, their origin countries, resolutions, forecast lengths, and update frequencie
Weather API for non-commercial use launched on September 12, 2021 with 443 votes, #25 of 2,941 launches that month and more than 99% of that year's launches. The site was still online in September 2026, 5 years on.
In plain words
Open-Meteo is a weather API designed for non-commercial use, launched in 2021. It provides weather data access for developers building applications that don't generate revenue. The service stands out by offering free access to meteorological information without requiring API keys, making it straightforward for hobbyists and non-profit projects to integrate weather data into their applications.
written from the facts on this page · September 2026
From the sources
Weather Forecast APIs with weather models from multiple national weather providers, combining the best models for accurate forecasts worldwide. Explore the API documentation to learn more about the available weather models, their origin countries, resolutions, forecast lengths, and update frequencies. Get detailed JSON hourly weather forecasts for up to 7 or 16 days by specifying the geographical
By default, we provide forecasts for 7 days, but you can access forecasts for up to 16 days. If you're interested in past weather data, you can use the Past Days feature to access archivedfrom open-meteo.com
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This was posted before but I'm quite pleased to share a major update for https://oikolab.com. We now have available seven decades of hourly weather data starting from 1950 for any location in the world, thanks to the recent publication of ERA5 reanalysis data from European Centre for Medium-Range Weather Forecasts (ECMWF). ERA5 is gap-free, gridded dataset generated using data assimilation method (https://en.wikipedia.org/wiki/Data_assimilation), similar to NWP models but with the benefit of hindsight. As far as we're aware of, we're the first weather data…


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