SmogRank / Countries / Switzerland / October 2024
Most polluted cities in Switzerland, October 2024
1 city in Switzerland ranked by their average PM2.5 over the 31 days. Worst: Winterthur at 11.4 µg/m³, #259 of 1,561 cities in the world. A city needs measurements on 70% of the days to be ranked.
- 1Winterthurlow-cost sensorsZurich 11.4
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, October 2024 · Switzerland now
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SmogRank, most polluted cities in Switzerland, PM2.5, October 2024, smogrank.com/ch/history/2024-10 (accessed 2 Oct 2026).
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