SmogRank / World / Norway / March 2023

Most polluted cities in Norway, March 2023

17 cities in Norway ranked by their average PM2.5 over the 31 days. Worst: Hamar at 10.2 µg/m³, #247 of 948 cities in the world. Cleanest: Åsane at 2.7. 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.

← Hamar 10.2 µg/m³ 20 µg/m³0
Every city in Norway 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. 1HamarInnlandet
    53
  2. 2DrammenBuskerud
    53
  3. 3SarpsborgØstfold
    52
  4. 4LillestrømAkershus
    52
  5. 5FredrikstadØstfold
    50
  6. 6Mo i RanaNordland
    43
  7. 7PorsgrunnTelemark
    40
  8. 8OsloOslo
    39
  9. 9MossØstfold
    38
  10. 10GjøvikInnlandet
    31
  11. 11LillehammerInnlandet
    27
  12. 12TrondheimTrøndelag
    26
  13. 13KristiansandAgder
    25
  14. 13BergenVestland
    25
  15. 15NesttunVestland
    24
  16. 16BodøNordland
    18
  17. 17ÅsaneVestland
    15
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 · Norway now

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SmogRank, most polluted cities in Norway, PM2.5, March 2023, smogrank.com/no/history/2023-03 (accessed 2 Oct 2026).

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