SmogRank / Countries / Portugal / Porto
Most polluted cities in Porto, Portugal
2 measured cities ranked by PM2.5, last 7 days. Worst: Porto at 15.0 µg/m³, #240 in the world.
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
Porto 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 |
|---|---|
| Vila Nova de Gaia estimated | ≈ 16 µg/m³ |
| Felgueiras estimated | ≈ 22 µg/m³ |
| Rio Tinto estimated | ≈ 22 µg/m³ |
| Paranhos estimated | ≈ 22 µg/m³ |
| Ermesinde estimated | ≈ 22 µg/m³ |
| Santo Ovídio estimated | ≈ 16 µg/m³ |
| Afurada de Baixo estimated | ≈ 16 µg/m³ |
| Campanhã estimated | ≈ 22 µg/m³ |
| Aldoar estimated | ≈ 16 µg/m³ |
| Póvoa de Varzim estimated | ≈ 12 µg/m³ |
| Senhora da Hora estimated | ≈ 16 µg/m³ |
| Matosinhos estimated | ≈ 16 µg/m³ |
| Gondomar estimated | ≈ 22 µg/m³ |
| Águas Santas estimated | ≈ 22 µg/m³ |
| Vila do Conde estimated | ≈ 12 µg/m³ |
| Canidelo estimated | ≈ 16 µg/m³ |
| São Mamede de Infesta estimated | ≈ 16 µg/m³ |
| Oliveira do Douro estimated | ≈ 22 µg/m³ |
| Fânzeres estimated | ≈ 22 µg/m³ |
| Valadares estimated | ≈ 16 µg/m³ |
| Lordelo do Ouro estimated | ≈ 16 µg/m³ |
| Bougado estimated | ≈ 22 µg/m³ |
| Valongo estimated | ≈ 22 µg/m³ |
| Trofa estimated | ≈ 22 µg/m³ |
| Baião estimated | ≈ 29 µg/m³ |
| São Tiago de Custoias estimated | ≈ 16 µg/m³ |
| Pedroso estimated | ≈ 9 µg/m³ |
| Vilar de Andorinho estimated | ≈ 22 µg/m³ |
| Leça da Palmeira estimated | ≈ 16 µg/m³ |
| São Pedro da Cova estimated | ≈ 27 µg/m³ |
| Leça do Bailio estimated | ≈ 16 µg/m³ |
| Baguim do Monte estimated | ≈ 22 µg/m³ |
| Vermoim estimated | ≈ 16 µg/m³ |
| Alfena estimated | ≈ 22 µg/m³ |
Updated 2026-10-01 09:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.