SmogRank / World / Europe / Slovakia / Žilina Region
Most polluted cities in Žilina Region, Slovakia
2 measured cities, this year; 2 above the WHO annual guideline. Worst: Ružomberok at 10.9 µg/m³, #827 in the world.
Ranked by unhealthy days: the share of each city's measured days with a daily mean over 35.4 µg/m³ (US AQI 101+), Unhealthy for Sensitive Groups or worse on the US EPA's scale. Ties go to the higher average.
Cities coloured by their PM2.5 over the last 24 hours. Fires, smoke and ash: Oct 5, the newest UTC day mapped.
- 1Ružomberok 0%
- 2Martin 0%
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
Žilina 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 |
|---|---|
| Čadca | ≈ 21 µg/m³ |
| Dolný Kubín | ≈ 12 µg/m³ |
Bad-air episodes in Žilina Region
- Slovakia, Czechia and Poland, June 202627 to 28 June 2026, 2 days18 cities33 µg/m³peak, Krompachy
- Eastern Europe, 15 to 17 April 20263 days25 cities44 µg/m³peak, Szeged
- Eastern Europe, 10 to 12 April 20263 days36 cities60 µg/m³peak, Radomsko
- Eastern Europe, 3 to 7 December 20255 days64 cities158 µg/m³peak, Żywiec
- Southern Europe, November 202512 to 17 November 2025, 6 days41 cities122 µg/m³peak, Bijelo Polje
- Europe, 8 to 10 November 20253 days84 cities93 µg/m³peak, Żywiec
Times when many cities around here had PM2.5 at twice their usual or more on the same days.
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SmogRank, most polluted cities in Žilina Region, Slovakia, PM2.5, this year to 7 Oct 2026, 00:00 UTC, smogrank.com/sk/region/zilina-region?w=year.
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.
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.