SmogRank / Countries / Portugal
Most polluted cities in Portugal
4 measured cities ranked by PM2.5, last 30 days. Worst: Porto at 14.4 µg/m³, #247 in the world.
| # | City | µg/m³ | |
|---|---|---|---|
| 1 | Porto low-cost sensorsPorto | 14.4 | |
| 2 | Funchal Madeira | 7.0 | |
| 3 | Paredes Porto | 4.8 | |
| 4 | Vila Real Vila Real | 3.8 |
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
Portugal 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 |
|---|---|
| Braga estimated | ≈ 15 µg/m³ |
| Amadora estimated | ≈ 9 µg/m³ |
| Coimbra estimated | ≈ 12 µg/m³ |
| Leiria estimated | ≈ 9 µg/m³ |
| Setúbal estimated | ≈ 10 µg/m³ |
| Viseu estimated | ≈ 11 µg/m³ |
| Queluz estimated | ≈ 9 µg/m³ |
| Aveiro estimated | ≈ 11 µg/m³ |
| Vila Nova de Gaia estimated | ≈ 16 µg/m³ |
| Algueirão estimated | ≈ 9 µg/m³ |
| Loures estimated | ≈ 9 µg/m³ |
| Felgueiras estimated | ≈ 22 µg/m³ |
| Rio de Mouro estimated | ≈ 9 µg/m³ |
| Odivelas estimated | ≈ 9 µg/m³ |
| Évora estimated | ≈ 6 µg/m³ |
| Barreiro estimated | ≈ 9 µg/m³ |
| Monsanto estimated | ≈ 8 µg/m³ |
| Rio Tinto estimated | ≈ 22 µg/m³ |
| São Domingos de Rana estimated | ≈ 9 µg/m³ |
| Figueira da Foz estimated | ≈ 9 µg/m³ |
| Lumiar estimated | ≈ 9 µg/m³ |
| Paranhos estimated | ≈ 22 µg/m³ |
| Ponte de Lima estimated | ≈ 12 µg/m³ |
| Olival estimated | ≈ 9 µg/m³ |
| Santo António dos Olivais estimated | ≈ 12 µg/m³ |
| Sesimbra estimated | ≈ 12 µg/m³ |
| Guimarães estimated | ≈ 15 µg/m³ |
| Guarda estimated | ≈ 10 µg/m³ |
| Ermesinde estimated | ≈ 22 µg/m³ |
| Santo Ovídio estimated | ≈ 16 µg/m³ |
| Portimão estimated | ≈ 9 µg/m³ |
| Damaia estimated | ≈ 9 µg/m³ |
| Benfica estimated | ≈ 9 µg/m³ |
| Cascais estimated | ≈ 9 µg/m³ |
| Viana do Castelo estimated | ≈ 9 µg/m³ |
| Marvila estimated | ≈ 9 µg/m³ |
| Bragança estimated | ≈ 9 µg/m³ |
| Oeiras estimated | ≈ 9 µg/m³ |
| Beja estimated | ≈ 7 µg/m³ |
| Esposende estimated | ≈ 9 µg/m³ |
Regions
Updated 2026-10-01 08:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.