SmogRank / Countries / Czechia / 2024
Most polluted cities in Czechia, 2024
1 city in Czechia ranked by their average PM2.5 over the 366 days; 1 above the WHO annual guideline (5.0 µg/m³). Worst: Náchod at 14.8 µg/m³, #138 of 1,686 cities in the world. A city needs measurements on 70% of the days to be ranked.
- 1NáchodHradec Králové Region 14.83.0×
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+