SmogRank / World / Czechia / July 2026
Most polluted cities in Czechia, July 2026
2 cities in Czechia ranked by their average PM2.5 over the 31 days. Worst: Říčany at 7.1 µg/m³, #1,935 of 2,460 cities in the world. Cleanest: Stodůlky at 4.1. A city needs measurements on 70% of the days to be ranked.
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+
PM2.5 in µg/m³, coloured by the US EPA's PM2.5 categories. 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 2026 · Czechia now
Use this board
SmogRank, most polluted cities in Czechia, PM2.5, July 2026, smogrank.com/cz/history/2026-07 (accessed 2 Oct 2026).
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms.