SmogRank / Countries / Spain / Castille and León
Most polluted cities in Castille and León, Spain
10 measured cities ranked by PM2.5, last 7 days. Worst: Valladolid at 11.6 µg/m³, #391 in the world.
| # | City | µg/m³ | |
|---|---|---|---|
| 1 | Valladolid Castille and León | 11.6 | |
| 2 | Aranda de Duero Castille and León | 9.6 | |
| 3 | Ponferrada Castille and León | 9.0 | |
| 4 | Medina del Campo Castille and León | 9.0 | |
| 5 | Palencia Castille and León | 8.5 | |
| 6 | Miranda de Ebro Castille and León | 8.4 | |
| 7 | León Castille and León | 8.4 | |
| 8 | Salamanca Castille and León | 8.3 | |
| 9 | Burgos Castille and León | 7.9 | |
| 10 | Soria Castille and León | 7.4 |
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
Castille and León 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 |
|---|---|
| Zamora estimated | ≈ 10 µg/m³ |
| Ávila estimated | ≈ 6 µg/m³ |
| Segovia estimated | ≈ 7 µg/m³ |
| San Andrés del Rabanedo estimated | ≈ 9 µg/m³ |
| Laguna de Duero estimated | ≈ 10 µg/m³ |
| Benavente estimated | ≈ 9 µg/m³ |
| Villaquilambre estimated | ≈ 9 µg/m³ |
| Béjar estimated | ≈ 6 µg/m³ |
Updated 2026-10-01 11:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.