SmogRank / Countries / Austria / September 2025

Most polluted cities in Austria, September 2025

17 cities in Austria ranked by their average PM2.5 over the 30 days. Worst: Graz at 9.4 µg/m³, #549 of 2,439 cities in the world. Cleanest: Saalfelden am Steinernen Meer at 2.9. A city needs measurements on 70% of the days to be ranked.

  1. 1GrazStyria
    9.4
  2. 2Klagenfurt am WörtherseeCarinthia
    6.6
  3. 3AnsfeldenUpper Austria
    6.3
  4. 4TraunUpper Austria
    6.0
  5. 5AmstettenLower Austria
    5.8
  6. 6KlosterneuburgLower Austria
    5.6
  7. 7WelsUpper Austria
    5.5
  8. 7LinzUpper Austria
    5.5
  9. 9Sankt PöltenLower Austria
    5.3
  10. 9MödlingLower Austria
    5.3
  11. 9InnsbruckTyrol
    5.3
  12. 12ViennaVienna
    5.1
  13. 13PerchtoldsdorfLower Austria
    4.7
  14. 13BadenLower Austria
    4.7
  15. 15SteyrUpper Austria
    4.2
  16. 16SalzburgSalzburg
    3.9
  17. 17Saalfelden am Steinernen MeerSalzburg
    2.9
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

All cities in the world, September 2025 · Austria now

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SmogRank, most polluted cities in Austria, PM2.5, September 2025, smogrank.com/at/history/2025-09 (accessed 1 Oct 2026).

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