SmogRank / Countries / Mexico / Sonora
Most polluted cities in Sonora, Mexico
0 measured cities ranked by PM2.5, last 30 days.
No city has enough measurements for this window yet.
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
Sonora 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 |
|---|---|
| Hermosillo estimated | ≈ 4 µg/m³ |
| Ciudad Obregón estimated | ≈ 8 µg/m³ |
| San Luis Río Colorado estimated | ≈ 6 µg/m³ |
| Heroica Guaymas estimated | ≈ 4 µg/m³ |
| Navojoa estimated | ≈ 8 µg/m³ |
| Agua Prieta estimated | ≈ 2 µg/m³ |
| Puerto Peñasco estimated | ≈ 5 µg/m³ |
| Heroica Caborca estimated | ≈ 4 µg/m³ |
| Empalme estimated | ≈ 4 µg/m³ |
| Esperanza estimated | ≈ 8 µg/m³ |
| Cananea estimated | ≈ 2 µg/m³ |
| Miguel Alemán (La Doce) estimated | ≈ 4 µg/m³ |
| Huatabampo estimated | ≈ 7 µg/m³ |
| Magdalena de Kino estimated | ≈ 2 µg/m³ |
Updated 2026-10-01 09:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.