SmogRank / Countries / Czechia

Most polluted cities in Czechia

2 measured cities, last 24 hours; 0 above the WHO 24-hour guideline. Worst: Říčany at 14.9 µg/m³, #128 in the world.

The 44 monitors run by EEA in Czechia haven't reported for more than two days. Cities that rely on them are missing from the 24-hour board and may drop from the longer ones; they return when the data does.

Estimated: cities without a monitor

Czechia cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.

City	7-day estimate	Band
Brno střed	≈ 10 µg/m³	Moderate
Opava	≈ 12 µg/m³	Moderate
Chomutov	≈ 14 µg/m³	Moderate
Jablonec nad Nisou	≈ 9 µg/m³	Moderate
Karlovy Vary	≈ 10 µg/m³	Moderate
Prostějov	≈ 10 µg/m³	Moderate
Česká Lípa	≈ 11 µg/m³	Moderate
Třebíč	≈ 6 µg/m³	Good
Tábor	≈ 8 µg/m³	Good
Kolín	≈ 11 µg/m³	Moderate
Cheb	≈ 9 µg/m³	Good
Příbram	≈ 9 µg/m³	Good
Písek	≈ 8 µg/m³	Good
Trutnov	≈ 12 µg/m³	Moderate
Orlová	≈ 17 µg/m³	Moderate
Břeclav	≈ 7 µg/m³	Good
Vsetín	≈ 8 µg/m³	Good
Uherské Hradiště	≈ 10 µg/m³	Moderate
Bystrc	≈ 8 µg/m³	Good
Líšeň	≈ 9 µg/m³	Moderate
Litoměřice	≈ 14 µg/m³	Moderate
Šumperk	≈ 10 µg/m³	Moderate
Královo Pole	≈ 8 µg/m³	Good
Chrudim	≈ 8 µg/m³	Good
Havlíčkův Brod	≈ 7 µg/m³	Good
Klatovy	≈ 8 µg/m³	Good
Nový Jičín	≈ 11 µg/m³	Moderate
Řepy	≈ 15 µg/m³	Moderate
Krnov	≈ 9 µg/m³	Moderate
Strakonice	≈ 8 µg/m³	Good
Kutná Hora	≈ 11 µg/m³	Moderate
Náchod	≈ 12 µg/m³	Moderate
Kopřivnice	≈ 12 µg/m³	Moderate
Brandýs nad Labem-Stará Boleslav	≈ 13 µg/m³	Moderate
Vyškov	≈ 9 µg/m³	Moderate
Jindřichův Hradec	≈ 7 µg/m³	Good
Mělník	≈ 14 µg/m³	Moderate
Blansko	≈ 10 µg/m³	Moderate
Žabovřesky	≈ 8 µg/m³	Good
Jirkov	≈ 14 µg/m³	Moderate

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SmogRank, most polluted cities in Czechia, PM2.5, last 24 hours to 2 Oct 2026, 00:00 UTC, smogrank.com/cz.

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Regions

Measured cities in each region (30 days).

Updated 2026-10-02 00:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.