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Most polluted cities in Lower Austria, Austria, 2026

10 cities in Lower Austria, Austria ranked by their average PM2.5 so far (278 of 365 days); 10 above the WHO annual guideline (5.0 µg/m³). Worst: Baden at 14.2 µg/m³, #603 of 2,745 cities in the world. Cleanest: Sankt Pölten at 9.3. A city needs measurements on 70% of the days to be ranked.

About 356 people in these 3 cities breathed unhealthy air on an average day of 2026.

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.

← Tulln 233 2000
Every city in Lower Austria, Austria ranked for 2026 with monitors in two or more places, one column each, ranked by people breathing unhealthy air: height is people on an average day, colour its average. Point at it to read a city; tap to open it.
  1. 1Tulln
    233
  2. 2Groß-Enzersdorf
    123
  3. 3Amstetten
    0
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

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

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SmogRank, most polluted cities in Lower Austria, Austria, PM2.5, 2026 (so far), smogrank.com/at/region/lower-austria/history/2026 (accessed 6 Oct 2026).

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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.