SmogRank / World / Czechia / October 2025

Most polluted cities in Czechia, October 2025

No city in Czechia had measurements on 70% of the days, so October 2025 has no board for Czechia.

Good0–50
Satisfactory51–100
Moderate101–200
Poor201–300
Very poor301–400
Severe401+

India's National Air Quality Index (CPCB), PM2.5 sub-index. Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

All cities in the world, October 2025 · Czechia now