SmogRank / Countries / Portugal / July 2025

Most polluted cities in Portugal, July 2025

3 cities in Portugal ranked by their average PM2.5 over the 31 days. Worst: Ponte de Lima at 5.4 µg/m³, #2,008 of 2,283 cities in the world. Cleanest: Faro at 2.9. A city needs measurements on 70% of the days to be ranked.

  1. 1Ponte de LimaViana do Castelo
    5.4
  2. 2FunchalMadeira
    4.4
  3. 3FaroFaro
    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, July 2025 · Portugal now