SmogRank / World / Norway / March 2026

Most polluted cities in Norway, March 2026

14 cities in Norway ranked by their average PM2.5 over the 31 days. Worst: Porsgrunn at 14.0 µg/m³, #901 of 2,616 cities in the world. Cleanest: Bodø at 4.8. A city needs measurements on 70% of the days to be ranked.

← Porsgrunn 14.0 µg/m³ 20 µg/m³0
Every city in Norway ranked for March 2026, 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. 1PorsgrunnTelemark
    14.0
  2. 2FredrikstadØstfold
    12.2
  3. 3MossØstfold
    11.7
  4. 4SarpsborgØstfold
    11.4
  5. 5DrammenBuskerud
    10.3
  6. 6NesttunVestland
    9.8
  7. 7BergenVestland
    9.4
  8. 8LillehammerInnlandet
    9.1
  9. 9OsloOslo
    8.8
  10. 10ÅsaneVestland
    8.1
  11. 11GjøvikInnlandet
    6.4
  12. 12TrondheimTrøndelag
    5.8
  13. 13Mo i RanaNordland
    4.9
  14. 14BodøNordland
    4.8
Good0–5
Fair6–15
Moderate16–50
Poor51–90
Very poor91–140
Extremely poor141+

The European Environment Agency's air quality index bands for PM2.5 (2024 revision); it has bands, not numbers, so values stay in µg/m³. 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 2026 · Norway now

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

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