SmogRank / Countries / Czechia / 2025

Most polluted cities in Czechia, 2025

1 city in Czechia ranked by their average PM2.5 over the 365 days; 1 above the WHO annual guideline (5.0 µg/m³). Worst: Stodůlky at 53.3 µg/m³, #24 of 2,131 cities in the world. A city needs measurements on 70% of the days to be ranked.

  1. 1Stodůlkylow-cost sensorsPrague
    53.310.7×
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

All cities in the world, 2025 · Czechia now