The Hungarian Air Quality Monitoring Network provides current and historical air quality monitoring data nationwide. The network consists of two mayor parts: automatic monitoring stations with continuous measure of wide range of air pollutants in ambient air, and manual system with sampling points and consecutive laboratory analysis.
The web page contains data from automatic network within one/some hours (historical data back to 2004). Data from manual system are updated at least every quarter years (historical data back to 2002). There are also annual assessment reports for both systems as well as for particulate matter (PM10) components (now only in Hungarian).