SmogRank / World / Europe / Czechia / Moravian-Silesian Region
Most polluted cities in Moravian-Silesian Region, Czechia
No city in Moravian-Silesian Region, Czechia has enough readings to rank for the last 30 days.
47 monitors in Czechia stopped reporting on 6 Oct, 12:00 local time. Cities that rely on them are missing from the 24-hour board and may drop from the longer ones; that isn't clean air, and they return when the data does.
A city joins this ranking with enough days of readings over the last 30 days; none here has that right now, so there is nothing to map or chart.
The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales
Estimated: cities without a monitor
Moravian-Silesian Region 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 |
|---|---|
| Opava | ≈ 26 µg/m³ |
| Orlová | ≈ 48 µg/m³ |
| Český Těšín | ≈ 21 µg/m³ |
| Nový Jičín | ≈ 24 µg/m³ |
| Krnov | ≈ 18 µg/m³ |
| Kopřivnice | ≈ 24 µg/m³ |
| Bohumín | ≈ 48 µg/m³ |
Bad-air episodes in Moravian-Silesian Region
- Europe, January and February 202612 January to 12 February 2026, 32 days625 cities252 µg/m³peak, Travnik
- Eastern Europe, 3 to 7 December 20255 days64 cities158 µg/m³peak, Żywiec
- Europe, 8 to 10 November 20253 days84 cities93 µg/m³peak, Żywiec
- Europe, March 202519 to 30 March 2025, 12 days401 cities83 µg/m³peak, Kikinda
- Germany, Poland and 25 more countries, March 20253 to 13 March 2025, 11 days553 cities152 µg/m³peak, Negotin
- Europe, 14 February to 1 March 202516 days619 cities178 µg/m³peak, Krotoszyn
Times when many cities around here had PM2.5 at twice their usual or more on the same days.
Updated 2026-10-07 00:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.