SmogRank / Countries / Switzerland / February 2026

Most polluted cities in Switzerland, February 2026

6 cities in Switzerland ranked by their average PM2.5 over the 28 days. Worst: Lugano at 14.4 µg/m³, #501 of 2,251 cities in the world. Cleanest: Bern at 7.3. A city needs measurements on 70% of the days to be ranked.

  1. 1LuganoTicino
    14.4
  2. 2BellinzonaTicino
    14.0
  3. 3Winterthurlow-cost sensorsZurich
    12.7
  4. 4ZürichZurich
    8.2
  5. 5BaselBasel-City
    7.7
  6. 6BernBern
    7.3
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 2026 · Switzerland now

Use this board

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

Download top 10 (PNG)

You're welcome to reuse a single chart, image or figure with this citation and a link. Terms.