About this API
The City of Warsaw's open-data platform exposes continuously updated city data — public transport vehicle positions (roughly every 10 seconds), Park&Ride occupancy, Veturilo bike-station status, and air-quality readings from city sensors.
Frequently asked questions
Do I need an API key?
Yes, but registration at api.um.warszawa.pl is free and quick.
What data does this API return?
Real-time bus and tram positions, free spots at Park&Ride facilities, Veturilo city-bike station status, air-quality sensor readings, and other datasets published by the city.
Does this only cover Warsaw?
Yes — this is the only entry in this catalog with a local, not national or EU-wide, scope. The data covers only the infrastructure and services of the City of Warsaw.
Who runs this API?
The City of Warsaw. Full documentation is available at api.um.warszawa.pl.