SmogRank / Countries / Italy / April 2026

Most polluted cities in Italy, April 2026

23 cities in Italy ranked by their average PM2.5 over the 30 days. Worst: Marigliano at 14.9 µg/m³, #312 of 2,283 cities in the world. Cleanest: Aosta at 7.5. A city needs measurements on 70% of the days to be ranked.

  1. 1MariglianoCampania
    14.9
  2. 1AcerraCampania
    14.9
  3. 3NovaraPiedmont
    14.8
  4. 4JesiThe Marches
    14.2
  5. 5NichelinoPiedmont
    13.7
  6. 6AlessandriaPiedmont
    13.5
  7. 7BraPiedmont
    13.3
  8. 8Falconara MarittimaThe Marches
    12.6
  9. 9San Felice A CancelloCampania
    12.4
  10. 10CasertaCampania
    12.3
  11. 11NaplesCampania
    12.1
  12. 12TrentoTrentino-Alto Adige
    12.0
  13. 13TurinPiedmont
    11.3
  14. 14RoveretoTrentino-Alto Adige
    10.9
  15. 15VercelliPiedmont
    10.6
  16. 16BorgomaneroPiedmont
    10.5
  17. 17BiellaPiedmont
    9.5
  18. 18SalernoCampania
    9.2
  19. 19VerbaniaPiedmont
    9.0
  20. 20AvellinoCampania
    8.7
  21. 21BolzanoTrentino-Alto Adige
    8.1
  22. 22GoriziaFriuli Venezia Giulia
    8.0
  23. 23AostaAosta Valley
    7.5
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, April 2026 · Italy now