SmogRank / Countries / Switzerland / Zurich
Most polluted cities in Zurich, Switzerland
2 measured cities ranked by PM2.5, this year. Worst: Winterthur at 10.5 µg/m³, #564 in the world.
| # | City | µg/m³ | |
|---|---|---|---|
| 1 | Winterthur low-cost sensorsZurich | 10.5 | |
| 2 | Zürich Zurich | 9.0 |
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
Zurich 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 |
|---|---|
| Uster estimated | ≈ 10 µg/m³ |
| Wetzikon estimated | ≈ 10 µg/m³ |
| Horgen estimated | ≈ 12 µg/m³ |
| Opfikon estimated | ≈ 10 µg/m³ |
| Dietikon estimated | ≈ 10 µg/m³ |
| Bülach estimated | ≈ 10 µg/m³ |
| Dübendorf estimated | ≈ 10 µg/m³ |
| Kloten estimated | ≈ 10 µg/m³ |
| Stadt Winterthur (Kreis 1) estimated | ≈ 11 µg/m³ |
| Seen (Kreis 3) estimated | ≈ 11 µg/m³ |
| Adliswil estimated | ≈ 12 µg/m³ |
Updated 2026-10-01 16:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.