What is the air quality in Bratislava?

Bratislava, Slovakia has an annual US AQI of 67 (Polluted) and average PM2.5 of 17.4 µg/m³, ranking #2908 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Bratislava?

May is typically the cleanest month (AQI 54) and January the most polluted (AQI 82).

Where does Bratislava's air quality data come from?

PM2.5: 1998–2026 (monitors 2016–2026, satellite 1998–2015; 2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Bratislava, Slovakia — Air Quality & Clean City Guide 2026

Bratislava Air Quality Data

Global rank	City	Continent	AQI	PM2.5
2908	Bratislava, Slovakia	Europe	AQI 67	PM2.5 17.4 µg/m³