SmogRank / World / Italy / December 2025
Most polluted cities in Italy, December 2025
1 city in Italy ranked by their average PM2.5 over the 31 days. Worst: Gorizia at 16.3 µg/m³, #431 of 2,351 cities in the world. A city needs measurements on 70% of the days to be ranked.
- 1GoriziaFriuli Venezia Giulia 16.3
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, December 2025 · Italy now
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SmogRank, most polluted cities in Italy, PM2.5, December 2025, smogrank.com/it/history/2025-12 (accessed 2 Oct 2026).
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