SmogRank / Countries / United States / Arizona
Most polluted cities in Arizona, United States
15 measured cities ranked by PM2.5, last 7 days. Worst: Nogales at 6.2 µg/m³, #1470 in the world.
| # | City | µg/m³ | |
|---|---|---|---|
| 1 | Nogales Arizona | 6.2 | |
| 2 | Flagstaff Arizona | 5.9 | |
| 3 | Tucson Arizona | 5.3 | |
| 4 | Tempe Arizona | 4.8 | |
| 5 | Payson Arizona | 4.6 | |
| 6 | Phoenix Arizona | 4.5 | |
| 7 | Yuma Arizona | 4.5 | |
| 8 | Apache Junction Arizona | 3.8 | |
| 9 | Mesa Arizona | 3.6 | |
| 10 | Casas Adobes Arizona | 3.5 | |
| 11 | Glendale Arizona | 3.4 | |
| 12 | Marana Arizona | 3.3 | |
| 13 | Casa Grande Arizona | 2.9 | |
| 14 | Green Valley Arizona | 2.8 | |
| 15 | Oro Valley low-cost sensorsArizona | 0.1 |
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
Arizona 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 |
|---|---|
| Chandler estimated | ≈ 7 µg/m³ |
| Gilbert estimated | ≈ 4 µg/m³ |
| Scottsdale estimated | ≈ 7 µg/m³ |
| Peoria estimated | ≈ 7 µg/m³ |
| Tempe Junction estimated | ≈ 7 µg/m³ |
| Surprise estimated | ≈ 7 µg/m³ |
| San Tan Valley estimated | ≈ 4 µg/m³ |
| Avondale estimated | ≈ 7 µg/m³ |
| Goodyear estimated | ≈ 7 µg/m³ |
| Lake Havasu City estimated | ≈ 2 µg/m³ |
| Buckeye estimated | ≈ 5 µg/m³ |
| Catalina Foothills estimated | ≈ 3 µg/m³ |
| Maricopa estimated | ≈ 7 µg/m³ |
| Sierra Vista estimated | ≈ 2 µg/m³ |
| Prescott Valley estimated | ≈ 3 µg/m³ |
| Bullhead City estimated | ≈ 2 µg/m³ |
| Sun City estimated | ≈ 7 µg/m³ |
| Queen Creek estimated | ≈ 4 µg/m³ |
| El Mirage estimated | ≈ 7 µg/m³ |
| San Luis estimated | ≈ 6 µg/m³ |
| Florence estimated | ≈ 2 µg/m³ |
| Kingman estimated | ≈ 2 µg/m³ |
| Drexel Heights estimated | ≈ 2 µg/m³ |
| Fortuna Foothills estimated | ≈ 4 µg/m³ |
| Sahuarita estimated | ≈ 3 µg/m³ |
| Sun City West estimated | ≈ 7 µg/m³ |
| Fountain Hills estimated | ≈ 4 µg/m³ |
| Rio Rico estimated | ≈ 2 µg/m³ |
| Eloy estimated | ≈ 3 µg/m³ |
| Tanque Verde estimated | ≈ 3 µg/m³ |
| Flowing Wells estimated | ≈ 3 µg/m³ |
| Somerton estimated | ≈ 6 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.