SmogRank / Countries / Portugal / July 2026

Most polluted cities in Portugal, July 2026

3 cities in Portugal ranked by their average PM2.5 over the 31 days. Worst: Porto at 13.2 µg/m³, #532 of 2,262 cities in the world. Cleanest: Vila Real at 5.1. A city needs measurements on 70% of the days to be ranked.

  1. 1Portolow-cost sensorsPorto
    13.2
  2. 2FunchalMadeira
    5.9
  3. 3Vila RealVila Real
    5.1
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 2026 · Portugal now