SmogRank / Countries / Finland / January 2026

Most polluted cities in Finland, January 2026

10 cities in Finland ranked by their average PM2.5 over the 31 days. Worst: Myyrmäki at 9.2 µg/m³, #858 of 2,047 cities in the world. Cleanest: Oulu at 5.1. A city needs measurements on 70% of the days to be ranked.

  1. 1MyyrmäkiUusimaa
    9.2
  2. 2VantaaUusimaa
    8.5
  3. 3PoriSatakunta
    8.4
  4. 4HelsinkiUusimaa
    7.6
  5. 5LohjaUusimaa
    7.5
  6. 6LappeenrantaSouth Karelia
    6.9
  7. 7KlaukkalaUusimaa
    5.9
  8. 8LahtiPaijat-Hame
    5.6
  9. 9TamperePirkanmaa
    5.4
  10. 10OuluNorth Ostrobothnia
    5.1
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, January 2026 · Finland now

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SmogRank, most polluted cities in Finland, PM2.5, January 2026, smogrank.com/fi/history/2026-01 (accessed 2 Oct 2026).

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