SmogRank / Countries / Finland / May 2026

Most polluted cities in Finland, May 2026

12 cities in Finland ranked by their average PM2.5 over the 31 days. Worst: Lappeenranta at 6.2 µg/m³, #1,467 of 2,243 cities in the world. Cleanest: Klaukkala at 3.5. A city needs measurements on 70% of the days to be ranked.

  1. 1LappeenrantaSouth Karelia
    6.2
  2. 2HelsinkiUusimaa
    5.9
  3. 3MyyrmäkiUusimaa
    5.0
  4. 4VantaaUusimaa
    4.6
  5. 5PoriSatakunta
    4.5
  6. 5LohjaUusimaa
    4.5
  7. 7JyväskyläCentral Finland
    4.4
  8. 8LahtiPaijat-Hame
    4.2
  9. 9TamperePirkanmaa
    4.1
  10. 10KuopioNorth Savo
    3.9
  11. 11OuluNorth Ostrobothnia
    3.6
  12. 12KlaukkalaUusimaa
    3.5
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, May 2026 · Finland now