What is the air quality in Prague?

Prague, Czechia has an annual US AQI of 66 (Polluted) and average PM2.5 of 17 µg/m³, ranking #2836 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Prague?

May is typically the cleanest month (AQI 57) and January the most polluted (AQI 79).

Where does Prague's air quality data come from?

PM2.5: 1998–2026 (monitors 2004–2026, satellite 1998–2003, 2006; 2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Prague, Czechia — Air Quality & Clean City Guide 2026

Prague Air Quality Data

Global rank	City	Continent	AQI	PM2.5
2836	Prague, Czechia	Europe	AQI 66	PM2.5 17 µg/m³