SmogRank / Countries / Portugal / June 2026

Most polluted cities in Portugal, June 2026

4 cities in Portugal ranked by their average PM2.5 over the 30 days. Worst: Porto at 10.8 µg/m³, #325 of 1,918 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
    10.8
  2. 2Vila RealVila Real
    4.0
  3. 3FunchalMadeira
    3.5
  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, June 2026 · Portugal now