SmogRank / Countries / Finland / May 2023

Most polluted cities in Finland, May 2023

8 cities in Finland ranked by their average PM2.5 over the 31 days. Worst: Helsinki at 6.2 µg/m³, #1,015 of 1,267 cities in the world. Cleanest: Vaasa at 2.7. A city needs measurements on 70% of the days to be ranked.

  1. 1HelsinkiUusimaa
    6.2
  2. 2MyyrmäkiUusimaa
    5.8
  3. 3VantaaUusimaa
    5.7
  4. 4LahtiPaijat-Hame
    4.9
  5. 5LappeenrantaSouth Karelia
    4.8
  6. 6TamperePirkanmaa
    4.5
  7. 7KlaukkalaUusimaa
    4.3
  8. 8VaasaOstrobothnia
    2.7
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 2023 · Finland now

Use this board

SmogRank, most polluted cities in Finland, PM2.5, May 2023, smogrank.com/fi/history/2023-05 (accessed 2 Oct 2026).

Download top 10 (PNG)

You're welcome to reuse a single chart, image or figure with this citation and a link. Terms.