SmogRank / Countries / Italy / 2026
Most polluted cities in Italy, 2026
1 city in Italy ranked by their average PM2.5 so far (273 of 365 days); 1 above the WHO annual guideline (5.0 µg/m³). Worst: Gorizia at 9.9 µg/m³, #684 of 2,181 cities in the world. A city needs measurements on 70% of the days to be ranked.
- 1GoriziaFriuli Venezia Giulia 9.92.0×
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+