SmogRank / Countries / Switzerland / May 2023

Most polluted cities in Switzerland, May 2023

5 cities in Switzerland ranked by their average PM2.5 over the 31 days. Worst: Bern at 8.3 µg/m³, #679 of 1,267 cities in the world. Cleanest: Lugano at 5.8. A city needs measurements on 70% of the days to be ranked.

  1. 1BernBern
    8.3
  2. 2BaselBasel-City
    8.1
  3. 3ZürichZurich
    7.5
  4. 4BellinzonaTicino
    6.0
  5. 5LuganoTicino
    5.8
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, May 2023 · Switzerland now