SmogRank / World / North America / Mexico / Coahuila
Most polluted cities in Coahuila, Mexico
No city in Coahuila, Mexico has enough readings to rank so far this year.
A city joins this ranking with enough days of readings so far this year; none here has that right now, so there is nothing to map or chart.
Last 7 days: 1 measured city · Last 30 days: 1 measured city
Canada's AQHI+ for PM2.5 (1 point per 10 µg/m³), which is defined on hourly values. Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales
Estimated: cities without a monitor
Coahuila 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 |
|---|---|
| Torreón | ≈ 9 µg/m³ |
| Ciudad Acuña | ≈ 7 µg/m³ |
| Monclova | ≈ 8 µg/m³ |
| Frontera | ≈ 8 µg/m³ |
| Ramos Arizpe | ≈ 10 µg/m³ |
| Sabinas | ≈ 8 µg/m³ |
| Matamoros | ≈ 8 µg/m³ |
| San Pedro | ≈ 8 µg/m³ |
| San Pedro | ≈ 8 µg/m³ |
| Nueva Rosita | ≈ 8 µg/m³ |
| Ciudad Melchor Múzquiz | ≈ 8 µg/m³ |
| Parras de la Fuente | ≈ 8 µg/m³ |
| Francisco I. Madero | ≈ 8 µg/m³ |
| Castaños | ≈ 8 µg/m³ |
| Nava | ≈ 9 µg/m³ |
| Allende | ≈ 9 µg/m³ |
| San Buenaventura | ≈ 8 µg/m³ |
| Palaú | ≈ 8 µg/m³ |
Updated 2026-10-02 06:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the Canada AQHI+ PM2.5 sub-index.