SmogRank / World / Finland / March 2023

Most polluted cities in Finland, March 2023

8 cities in Finland ranked by their average PM2.5 over the 31 days. Worst: Myyrmäki at 5.1 µg/m³, #824 of 948 cities in the world. Cleanest: Vaasa at 1.8. A city needs measurements on 70% of the days to be ranked.

OpenAQ's archive, where our readings come from, has almost none for 20 of these 31 days. Cities in the United States and Europe have them from the EPA's and the European Environment Agency's own records of the same monitors; many cities elsewhere are missing from this board, not clean. Why.

← Myyrmäki 5.1 µg/m³ 20 µg/m³0
Every city in Finland ranked for March 2023, one column each, worst on the left and cleanest on the right; height is PM2.5 in µg/m³. Point at it to read a city; tap to open it.
  1. 1MyyrmäkiUusimaa
    28
  2. 2LappeenrantaSouth Karelia
    26
  3. 2HelsinkiUusimaa
    26
  4. 4VantaaUusimaa
    25
  5. 5TamperePirkanmaa
    20
  6. 6LahtiPaijat-Hame
    17
  7. 7KlaukkalaUusimaa
    13
  8. 8VaasaOstrobothnia
    10
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

All cities in the world, March 2023 · Finland now

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SmogRank, most polluted cities in Finland, PM2.5, March 2023, smogrank.com/fi/history/2023-03 (accessed 2 Oct 2026).

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