SmogRank / Countries / Finland / October 2023

Most polluted cities in Finland, October 2023

9 cities in Finland ranked by their average PM2.5 over the 31 days. Worst: Oulu at 4.3 µg/m³, #1,591 of 1,686 cities in the world. Cleanest: Klaukkala at 2.3. A city needs measurements on 70% of the days to be ranked.

  1. 1OuluNorth Ostrobothnia
    4.3
  2. 1LappeenrantaSouth Karelia
    4.3
  3. 3HelsinkiUusimaa
    3.8
  4. 4VantaaUusimaa
    3.3
  5. 5MyyrmäkiUusimaa
    3.1
  6. 6LahtiPaijat-Hame
    2.8
  7. 7TamperePirkanmaa
    2.6
  8. 8VaasaOstrobothnia
    2.4
  9. 9KlaukkalaUusimaa
    2.3
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, October 2023 · Finland now

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SmogRank, most polluted cities in Finland, PM2.5, October 2023, smogrank.com/fi/history/2023-10 (accessed 2 Oct 2026).

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