SmogRank / Countries / Switzerland / February 2025

Most polluted cities in Switzerland, February 2025

5 cities in Switzerland ranked by their average PM2.5 over the 28 days. Worst: Bellinzona at 25.5 µg/m³, #182 of 2,012 cities in the world. Cleanest: Lugano at 18.9. A city needs measurements on 70% of the days to be ranked.

  1. 1BellinzonaTicino
    25.5
  2. 2BaselBasel-City
    22.5
  3. 3BernBern
    20.7
  4. 4ZürichZurich
    19.7
  5. 5LuganoTicino
    18.9
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, February 2025 · Switzerland now

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SmogRank, most polluted cities in Switzerland, PM2.5, February 2025, smogrank.com/ch/history/2025-02 (accessed 2 Oct 2026).

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