SmogRank / Countries / Switzerland / December 2024

Most polluted cities in Switzerland, December 2024

6 cities in Switzerland ranked by their average PM2.5 over the 31 days. Worst: Winterthur at 20.5 µg/m³, #189 of 2,078 cities in the world. Cleanest: Zürich at 8.9. A city needs measurements on 70% of the days to be ranked.

  1. 1Winterthurlow-cost sensorsZurich
    20.5
  2. 2BellinzonaTicino
    17.8
  3. 3BaselBasel-City
    10.7
  4. 4BernBern
    10.4
  5. 5LuganoTicino
    9.0
  6. 6ZürichZurich
    8.9
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, December 2024 · Switzerland now