SmogRank / Countries / Portugal / 2025

Most polluted cities in Portugal, 2025

2 cities in Portugal ranked by their average PM2.5 over the 365 days; 0 above the WHO annual guideline (5.0 µg/m³). Worst: Funchal at 3.8 µg/m³, #2,108 of 2,131 cities in the world. Cleanest: Faro at 2.6. A city needs measurements on 70% of the days to be ranked.

  1. 1FunchalMadeira
    3.80.8×
  2. 2FaroFaro
    2.60.5×
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, 2025 · Portugal now