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
    2
  2. 2InnsbruckTyrol
    2
  3. 3LinzUpper Austria
    2
  4. 4EisenzickenBurgenland
    2
  5. 5WolfsbergCarinthia
    2
  6. 6TraunUpper Austria
    2
  7. 7KlosterneuburgLower Austria
    2
  8. 8AmstettenLower Austria
    2
  9. 9WelsUpper Austria
    2
  10. 9AnsfeldenUpper Austria
    2
  11. 11ViennaVienna
    2
  12. 12Klagenfurt am WörtherseeCarinthia
    2
  13. 13MödlingLower Austria
    2
  14. 14PerchtoldsdorfLower Austria
    2
  15. 15Sankt PöltenLower Austria
    2
  16. 16BadenLower Austria
    2
  17. 17SteyrUpper Austria
    2
  18. 18SalzburgSalzburg
    2
  19. 19Saalfelden am Steinernen MeerSalzburg
    1
Low risk1–3
Moderate risk4–6
High risk7–10
Very high risk10+

Canada's AQHI+ for PM2.5 (1 point per 10 µg/m³), which is defined on hourly values. 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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