SmogRank / World / Europe / Austria / Upper Austria
Most polluted cities in Upper Austria, Austria
7 measured cities, this year; 7 above the WHO annual guideline. Worst: Enns at 10.8 µg/m³, #845 in the world.
About 797 people in these 2 cities breathed unhealthy air on an average day so far this year.
Ranked by people: each city's population times its share of unhealthy days, those with a daily mean over 35.4 µg/m³ (US AQI 101+). That is how many people living there breathed unhealthy air on an average day. Only cities measured at 2 or more places at least 3 km apart are ranked: one monitor shouldn't speak for a whole city. Population is the city itself, not its wider metro area.
- 1Linz 764
- 2Attnang-Puchheimlast full day 3 Oct 33
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
Upper Austria 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 |
|---|---|
| Ansfelden | ≈ 14 µg/m³ |
Bad-air episodes in Upper Austria
- Europe, 18 to 25 March 20268 days430 cities136 µg/m³peak, Łask
- Europe, January and February 202612 January to 12 February 2026, 32 days625 cities252 µg/m³peak, Travnik
- Eastern Europe, January 20269 to 10 January 2026, 2 days86 cities210 µg/m³peak, Bijelo Polje
- 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
- Europe, 1 to 14 February 202514 days628 cities179 µg/m³peak, Banja Luka
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 Upper Austria, Austria, PM2.5, this year to 6 Oct 2026, 22:00 UTC, smogrank.com/at/region/upper-austria?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 2026-10-06 22:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.