SmogRank / Countries / Portugal / February 2026

Most polluted cities in Portugal, February 2026

4 cities in Portugal ranked by their average PM2.5 over the 28 days. Worst: Porto at 14.9 µg/m³, #477 of 2,251 cities in the world. Cleanest: Faro at 2.9. A city needs measurements on 70% of the days to be ranked.

  1. 1Portolow-cost sensorsPorto
    14.9
  2. 2FunchalMadeira
    4.7
  3. 3CorroiosSetúbal
    3.3
  4. 4FaroFaro
    2.9
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

All cities in the world, February 2026 · Portugal now