SmogRank / Countries / Switzerland
Most polluted cities in Switzerland
5 measured cities ranked by PM2.5, last 7 days. Worst: Bellinzona at 12.6 µg/m³, #335 in the world.
| # | City | µg/m³ | |
|---|---|---|---|
| 1 | Bellinzona Ticino | 12.6 | |
| 2 | Winterthur low-cost sensorsZurich | 12.5 | |
| 3 | Zürich Zurich | 11.0 | |
| 4 | Basel Basel-City | 8.7 | |
| 5 | Lugano Ticino | 8.0 |
Good 0–9.0Moderate 9.1+Unhealthy for sensitive groups 35.5+Unhealthy 55.5+Very unhealthy 125.5+Hazardous 225.5+No data
Estimated: cities without a monitor
Switzerland cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.
| City | 7-day estimate |
|---|---|
| Geneva estimated | ≈ 8 µg/m³ |
| Lausanne estimated | ≈ 9 µg/m³ |
| Luzern estimated | ≈ 11 µg/m³ |
| Sankt Gallen estimated | ≈ 15 µg/m³ |
| Biel/Bienne estimated | ≈ 7 µg/m³ |
| Thun estimated | ≈ 7 µg/m³ |
| Köniz estimated | ≈ 8 µg/m³ |
| Fribourg estimated | ≈ 9 µg/m³ |
| La Chaux-de-Fonds estimated | ≈ 6 µg/m³ |
| Schaffhausen estimated | ≈ 11 µg/m³ |
| Chur estimated | ≈ 5 µg/m³ |
| Rapperswil estimated | ≈ 9 µg/m³ |
| Uster estimated | ≈ 10 µg/m³ |
| Sitten estimated | ≈ 5 µg/m³ |
| Neuchâtel estimated | ≈ 8 µg/m³ |
| Emmen estimated | ≈ 11 µg/m³ |
| Zug estimated | ≈ 12 µg/m³ |
| Yverdon-les-Bains estimated | ≈ 9 µg/m³ |
| Vernier estimated | ≈ 8 µg/m³ |
| Montreux estimated | ≈ 9 µg/m³ |
| Frauenfeld estimated | ≈ 11 µg/m³ |
| Kriens estimated | ≈ 11 µg/m³ |
| Wetzikon estimated | ≈ 10 µg/m³ |
| Wil estimated | ≈ 13 µg/m³ |
| Bulle estimated | ≈ 9 µg/m³ |
| Horgen estimated | ≈ 12 µg/m³ |
| Kreuzlingen estimated | ≈ 15 µg/m³ |
| Opfikon estimated | ≈ 10 µg/m³ |
| Aarau estimated | ≈ 12 µg/m³ |
| Renens estimated | ≈ 10 µg/m³ |
| Dietikon estimated | ≈ 10 µg/m³ |
| Baar estimated | ≈ 12 µg/m³ |
| Bülach estimated | ≈ 10 µg/m³ |
| Riehen estimated | ≈ 12 µg/m³ |
| Vevey estimated | ≈ 9 µg/m³ |
| Dübendorf estimated | ≈ 10 µg/m³ |
| Meyrin estimated | ≈ 8 µg/m³ |
| Carouge estimated | ≈ 10 µg/m³ |
| Baden estimated | ≈ 10 µg/m³ |
| Reinach estimated | ≈ 11 µg/m³ |
Regions
Updated 2026-10-01 13:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.