SmogRank / World / Italy / May 2025

Most polluted cities in Italy, May 2025

7 cities in Italy ranked by their average PM2.5 over the 31 days. Worst: Jesi at 12.0 µg/m³, #541 of 2,451 cities in the world. Cleanest: Aosta at 4.5. A city needs measurements on 70% of the days to be ranked.

← Jesi 12.0 µg/m³ 20 µg/m³0
Every city in Italy ranked for May 2025, one column each, worst on the left and cleanest on the right; height is PM2.5 in µg/m³. Point at it to read a city; tap to open it.
  1. 1JesiThe Marches
    56
  2. 2MilanLombardy
    48
  3. 3RoveretoTrentino-Alto Adige
    46
  4. 4TrentoTrentino-Alto Adige
    43
  5. 5GoriziaFriuli Venezia Giulia
    37
  6. 6BolzanoTrentino-Alto Adige
    29
  7. 7AostaAosta Valley
    25
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

All cities in the world, May 2025 · Italy now

Use this board

SmogRank, most polluted cities in Italy, PM2.5, May 2025, smogrank.com/it/history/2025-05 (accessed 2 Oct 2026).

Download top 10 (PNG)

You're welcome to reuse a single chart, image or figure with this citation and a link. Terms.