What is the air quality in Brno?

Brno, Czechia has an annual US AQI of 70 (Polluted) and average PM2.5 of 19 µg/m³, ranking #3188 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Brno?

May is typically the cleanest month (AQI 57) and January the most polluted (AQI 89).

Where does Brno's air quality data come from?

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

Brno, Czechia — Air Quality & Clean City Guide 2026

Brno Air Quality Data

Global rank	City	Continent	AQI	PM2.5
3188	Brno, Czechia	Europe	AQI 70	PM2.5 19 µg/m³