SmogRank / Countries / Germany / North Rhine-Westphalia
Most polluted cities in North Rhine-Westphalia, Germany
1 measured city ranked by PM2.5, last 30 days. Worst: Olpe at 2.6 µg/m³, #2293 in the world.
| # | City | µg/m³ | |
|---|---|---|---|
| 1 | Olpe low-cost sensorsNorth Rhine-Westphalia | 2.6 |
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
North Rhine-Westphalia 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 |
|---|---|
| Bochum estimated | ≈ 10 µg/m³ |
| Hamm estimated | ≈ 7 µg/m³ |
| Mülheim estimated | ≈ 11 µg/m³ |
| Herne estimated | ≈ 10 µg/m³ |
| Solingen estimated | ≈ 11 µg/m³ |
| Neuss estimated | ≈ 12 µg/m³ |
| Paderborn estimated | ≈ 7 µg/m³ |
| Recklinghausen estimated | ≈ 10 µg/m³ |
| Remscheid estimated | ≈ 10 µg/m³ |
| Siegen estimated | ≈ 7 µg/m³ |
| Bergisch Gladbach estimated | ≈ 9 µg/m³ |
| Moers estimated | ≈ 11 µg/m³ |
| Gütersloh estimated | ≈ 7 µg/m³ |
| Düren estimated | ≈ 10 µg/m³ |
| Iserlohn estimated | ≈ 7 µg/m³ |
| Witten estimated | ≈ 10 µg/m³ |
| Marl estimated | ≈ 10 µg/m³ |
| Velbert estimated | ≈ 10 µg/m³ |
| Minden estimated | ≈ 7 µg/m³ |
| Dorsten estimated | ≈ 11 µg/m³ |
| Castrop-Rauxel estimated | ≈ 10 µg/m³ |
| Rheine estimated | ≈ 9 µg/m³ |
| Viersen estimated | ≈ 11 µg/m³ |
| Gladbeck estimated | ≈ 11 µg/m³ |
| Arnsberg estimated | ≈ 6 µg/m³ |
| Troisdorf estimated | ≈ 9 µg/m³ |
| Wattenscheid estimated | ≈ 10 µg/m³ |
| Bocholt estimated | ≈ 10 µg/m³ |
| Detmold estimated | ≈ 8 µg/m³ |
| Lippstadt estimated | ≈ 6 µg/m³ |
| Dinslaken estimated | ≈ 11 µg/m³ |
| Herten estimated | ≈ 10 µg/m³ |
| Herford estimated | ≈ 7 µg/m³ |
| Grevenbroich estimated | ≈ 11 µg/m³ |
| Kerpen estimated | ≈ 10 µg/m³ |
| Dormagen estimated | ≈ 12 µg/m³ |
| Bergheim estimated | ≈ 10 µg/m³ |
| Langenfeld estimated | ≈ 12 µg/m³ |
| Stolberg estimated | ≈ 10 µg/m³ |
| Hilden estimated | ≈ 12 µg/m³ |
Updated 2026-10-01 05:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.