SmogRank / Countries / Italy

Most polluted cities in Italy

3 measured cities, last 24 hours; 2 above the WHO 24-hour guideline. Worst: Aosta at 28.7 µg/m³, #32 in the world.

Estimated: cities without a monitor

Italy cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.

City	7-day estimate	Band
Palermo	≈ 10 µg/m³	Moderate
Bologna	≈ 9 µg/m³	Good
Catania	≈ 10 µg/m³	Moderate
Verona	≈ 12 µg/m³	Moderate
Messina	≈ 8 µg/m³	Good
Trieste	≈ 6 µg/m³	Good
Padua	≈ 16 µg/m³	Moderate
Parma	≈ 9 µg/m³	Good
Modena	≈ 10 µg/m³	Moderate
Reggio Calabria	≈ 8 µg/m³	Good
Reggio nell'Emilia	≈ 10 µg/m³	Moderate
Rimini	≈ 7 µg/m³	Good
Mestre	≈ 11 µg/m³	Moderate
Ferrara	≈ 10 µg/m³	Moderate
Acilia-Castel Fusano-Ostia Antica	≈ 11 µg/m³	Moderate
Siracusa	≈ 10 µg/m³	Moderate
Perugia	≈ 7 µg/m³	Good
Forlì	≈ 9 µg/m³	Good
Vicenza	≈ 13 µg/m³	Moderate
Terni	≈ 6 µg/m³	Good
Piacenza	≈ 10 µg/m³	Moderate
Udine	≈ 7 µg/m³	Good
Cesena	≈ 7 µg/m³	Good
Sassari	≈ 8 µg/m³	Good
Guidonia Montecelio	≈ 12 µg/m³	Moderate
Treviso	≈ 11 µg/m³	Moderate
Torre del Greco	≈ 9 µg/m³	Moderate
Busto Arsizio	≈ 15 µg/m³	Moderate
Sesto San Giovanni	≈ 16 µg/m³	Moderate
Lucca	≈ 7 µg/m³	Good
Pozzuoli	≈ 8 µg/m³	Good
Ravenna	≈ 9 µg/m³	Good
Fiumicino	≈ 11 µg/m³	Moderate
Giugliano in Campania	≈ 9 µg/m³	Moderate
Catanzaro	≈ 5 µg/m³	Good
Marsala	≈ 8 µg/m³	Good
Pesaro	≈ 7 µg/m³	Good
Fuorigrotta	≈ 8 µg/m³	Good
Cinisello Balsamo	≈ 16 µg/m³	Moderate
Gela	≈ 10 µg/m³	Moderate

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SmogRank, most polluted cities in Italy, PM2.5, last 24 hours to 2 Oct 2026, 00:00 UTC, smogrank.com/it.

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Regions

Measured cities in each region (30 days).

Updated 2026-10-02 00:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.