SmogRank / World / Czechia / July 2025
Most polluted cities in Czechia, July 2025
2 cities in Czechia ranked by their average PM2.5 over the 31 days. Worst: Říčany at 7.8 µg/m³, #1,640 of 2,499 cities in the world. Cleanest: Stodůlky at 7.2. A city needs measurements on 70% of the days to be ranked.
Excellent0–50
Good51–100
Lightly polluted101–150
Moderately polluted151–200
Heavily polluted201–300
Severely polluted301+
China's Air Quality Index (HJ 633-2012), PM2.5 individual 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, July 2025 · Czechia now
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SmogRank, most polluted cities in Czechia, PM2.5, July 2025, smogrank.com/cz/history/2025-07 (accessed 2 Oct 2026).
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