Most polluted cities in Chile
0 measured cities ranked by PM2.5, last 7 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
Chile 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 |
|---|---|
| Santiago estimated | ≈ 48 µg/m³ |
| Puente Alto estimated | ≈ 32 µg/m³ |
| Maipú estimated | ≈ 48 µg/m³ |
| Antofagasta estimated | ≈ 11 µg/m³ |
| Viña del Mar estimated | ≈ 15 µg/m³ |
| Valparaíso estimated | ≈ 15 µg/m³ |
| San Bernardo estimated | ≈ 48 µg/m³ |
| Puerto Montt estimated | ≈ 3 µg/m³ |
| Arica estimated | ≈ 8 µg/m³ |
| Peñalolén estimated | ≈ 32 µg/m³ |
| Temuco estimated | ≈ 5 µg/m³ |
| Concepción estimated | ≈ 6 µg/m³ |
| Rancagua estimated | ≈ 37 µg/m³ |
| Quilicura estimated | ≈ 29 µg/m³ |
| La Pintana estimated | ≈ 48 µg/m³ |
| Iquique estimated | ≈ 4 µg/m³ |
| Talca estimated | ≈ 12 µg/m³ |
| Calama estimated | ≈ 13 µg/m³ |
| Coquimbo estimated | ≈ 15 µg/m³ |
| La Serena estimated | ≈ 15 µg/m³ |
| Talcahuano estimated | ≈ 6 µg/m³ |
| Chillán estimated | ≈ 6 µg/m³ |
| Renca estimated | ≈ 48 µg/m³ |
| Colina estimated | ≈ 29 µg/m³ |
| Alto Hospicio estimated | ≈ 4 µg/m³ |
| Osorno estimated | ≈ 3 µg/m³ |
| Valdivia estimated | ≈ 3 µg/m³ |
| Villa Mercedes estimated | ≈ 5 µg/m³ |
| Quilpué estimated | ≈ 15 µg/m³ |
| Copiapó estimated | ≈ 8 µg/m³ |
| Los Ángeles estimated | ≈ 4 µg/m³ |
| San Pedro de la Paz estimated | ≈ 6 µg/m³ |
| Punta Arenas estimated | ≈ 3 µg/m³ |
| Coronel estimated | ≈ 5 µg/m³ |
| Lo Prado estimated | ≈ 48 µg/m³ |
| Curicó estimated | ≈ 19 µg/m³ |
| Lampa estimated | ≈ 29 µg/m³ |
| Villa Alemana estimated | ≈ 17 µg/m³ |
| San Antonio estimated | ≈ 14 µg/m³ |
| Hualpén estimated | ≈ 6 µg/m³ |
Updated 2026-10-01 06:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.