SmogRank / Countries / Switzerland / December 2023

Most polluted cities in Switzerland, December 2023

5 cities in Switzerland ranked by their average PM2.5 over the 31 days. Worst: Bellinzona at 11.3 µg/m³, #404 of 1,889 cities in the world. Cleanest: Zürich at 6.5. A city needs measurements on 70% of the days to be ranked.

  1. 1BellinzonaTicino
    11.3
  2. 2LuganoTicino
    9.6
  3. 3BaselBasel-City
    8.2
  4. 4BernBern
    7.8
  5. 5ZürichZurich
    6.5
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, December 2023 · Switzerland now

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SmogRank, most polluted cities in Switzerland, PM2.5, December 2023, smogrank.com/ch/history/2023-12 (accessed 2 Oct 2026).

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