Most polluted cities in Peru
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
Peru 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 |
|---|---|
| Lima estimated | ≈ 13 µg/m³ |
| Callao estimated | ≈ 13 µg/m³ |
| Arequipa estimated | ≈ 22 µg/m³ |
| Trujillo estimated | ≈ 7 µg/m³ |
| Piura estimated | ≈ 6 µg/m³ |
| Chiclayo estimated | ≈ 7 µg/m³ |
| Huancayo estimated | ≈ 9 µg/m³ |
| Cusco estimated | ≈ 10 µg/m³ |
| Iquitos estimated | ≈ 8 µg/m³ |
| Pucallpa estimated | ≈ 14 µg/m³ |
| Chimbote estimated | ≈ 6 µg/m³ |
| Tacna estimated | ≈ 13 µg/m³ |
| Ica estimated | ≈ 5 µg/m³ |
| Juliaca estimated | ≈ 6 µg/m³ |
| Cajamarca estimated | ≈ 7 µg/m³ |
| Huánuco estimated | ≈ 7 µg/m³ |
| Santa Anita - Los Ficus estimated | ≈ 19 µg/m³ |
| Sullana estimated | ≈ 6 µg/m³ |
| Chincha Alta estimated | ≈ 6 µg/m³ |
| Ayacucho estimated | ≈ 9 µg/m³ |
| San Martin estimated | ≈ 6 µg/m³ |
| Puno estimated | ≈ 5 µg/m³ |
| Huaraz estimated | ≈ 8 µg/m³ |
| San Francisco De Borja estimated | ≈ 19 µg/m³ |
| Talara estimated | ≈ 5 µg/m³ |
| Tumbes estimated | ≈ 8 µg/m³ |
| Chosica estimated | ≈ 19 µg/m³ |
| Puerto Maldonado estimated | ≈ 19 µg/m³ |
| Breña estimated | ≈ 13 µg/m³ |
| San Juan estimated | ≈ 8 µg/m³ |
| Ciudad Satelite estimated | ≈ 22 µg/m³ |
| Chilca estimated | ≈ 9 µg/m³ |
| Selva Alegre estimated | ≈ 22 µg/m³ |
| Abancay estimated | ≈ 13 µg/m³ |
| Moquegua estimated | ≈ 8 µg/m³ |
| Chulucanas estimated | ≈ 6 µg/m³ |
| San Isidro estimated | ≈ 13 µg/m³ |
| San Fernando estimated | ≈ 14 µg/m³ |
| Jesus Maria estimated | ≈ 13 µg/m³ |
| Santiago estimated | ≈ 10 µg/m³ |
Updated 2026-10-01 04:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.