SmogRank / Countries / Finland / 2025

Most polluted cities in Finland, 2025

12 cities in Finland ranked by their average PM2.5 over the 365 days; 6 above the WHO annual guideline (5.0 µg/m³). Worst: Myyrmäki at 6.4 µg/m³, #1,833 of 2,131 cities in the world. Cleanest: Tampere at 3.9. A city needs measurements on 70% of the days to be ranked.

  1. 1MyyrmäkiUusimaa
    6.41.3×
  2. 2HelsinkiUusimaa
    6.11.2×
  3. 3LappeenrantaSouth Karelia
    5.91.2×
  4. 4PoriSatakunta
    5.61.1×
  5. 5VantaaUusimaa
    5.51.1×
  6. 6LohjaUusimaa
    5.31.1×
  7. 7LahtiPaijat-Hame
    5.01.0×
  8. 8JyväskyläCentral Finland
    4.91.0×
  9. 9KuopioNorth Savo
    4.70.9×
  10. 10OuluNorth Ostrobothnia
    4.50.9×
  11. 11KlaukkalaUusimaa
    4.40.9×
  12. 12TamperePirkanmaa
    3.90.8×
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, 2025 · Finland now