SmogRank / World / Sweden / September 2026

Most polluted cities in Sweden, September 2026

1 city in Sweden ranked by their average PM2.5 over the 30 days. Worst: Örebro at 3.6 µg/m³, #2,516 of 2,646 cities in the world. A city needs measurements on 70% of the days to be ranked.

  1. 1ÖrebroÖrebro
    3.6
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, September 2026 · Sweden now

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SmogRank, most polluted cities in Sweden, PM2.5, September 2026, smogrank.com/se/history/2026-09 (accessed 2 Oct 2026).

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