What is the air quality in Ostrava?

Ostrava, Czechia has an annual US AQI of 84 (Polluted) and average PM2.5 of 26.2 µg/m³, ranking #3974 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Ostrava?

June is typically the cleanest month (AQI 63) and January the most polluted (AQI 111).

Where does Ostrava's air quality data come from?

PM2.5: 1998–2026 (monitors 2004–2025, satellite 1998–2003, model 2026). Measured by government monitoring stations. Full sources are on the methodology page.

Ostrava, Czechia — Air Quality & Clean City Guide 2026

Ostrava Air Quality Data

Global rank	City	Continent	AQI	PM2.5
3974	Ostrava, Czechia	Europe	AQI 84	PM2.5 26.2 µg/m³