SmogRank / World / Austria / December 2025

Most polluted cities in Austria, December 2025

19 cities in Austria ranked by their average PM2.5 over the 31 days. Worst: Graz at 19.5 µg/m³, #575 of 2,638 cities in the world. Cleanest: Saalfelden am Steinernen Meer at 8.8. A city needs measurements on 70% of the days to be ranked.

← Graz 19.5
Every city in Austria ranked for December 2025, one column each, worst on the left and cleanest on the right. Point at it to read a city; tap to open it.
  1. 1GrazStyria
    19.5
  2. 2InnsbruckTyrol
    14.6
  3. 3LinzUpper Austria
    13.7
  4. 4EisenzickenBurgenland
    13.6
  5. 5WolfsbergCarinthia
    13.4
  6. 6TraunUpper Austria
    13.2
  7. 7KlosterneuburgLower Austria
    12.7
  8. 8AmstettenLower Austria
    12.5
  9. 9WelsUpper Austria
    12.3
  10. 9AnsfeldenUpper Austria
    12.3
  11. 11ViennaVienna
    12.1
  12. 12Klagenfurt am WörtherseeCarinthia
    12.0
  13. 13MödlingLower Austria
    11.9
  14. 14PerchtoldsdorfLower Austria
    11.3
  15. 15Sankt PöltenLower Austria
    11.0
  16. 16BadenLower Austria
    10.9
  17. 17SteyrUpper Austria
    10.8
  18. 18SalzburgSalzburg
    10.6
  19. 19Saalfelden am Steinernen MeerSalzburg
    8.8
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

PM2.5 in µg/m³, coloured by the US EPA's PM2.5 categories. Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

All cities in the world, December 2025 · Austria now

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SmogRank, most polluted cities in Austria, PM2.5, December 2025, smogrank.com/at/history/2025-12 (accessed 2 Oct 2026).

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