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Bright Sky - JSON API for DWD's open weather data


Bright Sky is an open-source project aiming to make some of the more popular data — in particular weather observations from the DWD station network and weather forecasts from the MOSMIX model — available in a free, simple JSON API.


Bright Sky’s main API endpoint is at It expects a HTTP GET request with all parameters supplied in the query string. As bare minimum, you will need to supply a location (e.g. via lat and lon) and date.



Bright Sky’s development is boosted by the priceless guidance and support of the Open Knowledge Foundation’s Prototype Fund program, and is generously funded by Germany’s Federal Ministry of Education and Research. Obvious as it may be, it should be mentioned that none of this would be possible without the painstaking, never-ending effort of the Deutscher Wetterdienst.