About this API
IMGW-PIB publishes measurement data from its network of synoptic and hydrological stations — temperature, precipitation, pressure, wind speed, river water levels — plus current weather warnings. It's one of the most open APIs in this catalog — no authorization, no limits noticeable for ordinary use.
Frequently asked questions
Do I need an API key?
No, the data is fully public and free — no registration, no key.
What data does this API return?
Current readings from synoptic stations (temperature, wind, precipitation, pressure, humidity), hydrological data (water levels and temperatures), and weather warnings — in JSON, XML, or CSV, your choice.
Can this API be called directly from a browser?
Yes — the API returns a CORS header allowing calls from any domain, so it works straight from frontend code (hence the live "Try it" button above).
Who runs this API?
The Institute of Meteorology and Water Management — National Research Institute (IMGW-PIB). Full documentation is available at danepubliczne.imgw.pl/apiinfo.