SmogRank / Countries / Finland / July 2025

Most polluted cities in Finland, July 2025

12 cities in Finland ranked by their average PM2.5 over the 31 days. Worst: Helsinki at 9.9 µg/m³, #984 of 2,283 cities in the world. Cleanest: Oulu at 6.6. A city needs measurements on 70% of the days to be ranked.

  1. 1HelsinkiUusimaa
    9.9
  2. 2JyväskyläCentral Finland
    9.6
  3. 2MyyrmäkiUusimaa
    9.6
  4. 4LappeenrantaSouth Karelia
    9.1
  5. 5PoriSatakunta
    8.8
  6. 6LohjaUusimaa
    8.6
  7. 7LahtiPaijat-Hame
    8.4
  8. 8KuopioNorth Savo
    8.3
  9. 9VantaaUusimaa
    8.2
  10. 10KlaukkalaUusimaa
    8.0
  11. 11TamperePirkanmaa
    6.6
  12. 11OuluNorth Ostrobothnia
    6.6
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, July 2025 · Finland now