SmogRank / History / City race
Cities in Italy, worst air first, day by day
Each measured city's average over the 30 days to every day since January 2023, worst first. Find your own city to follow it through the race, or keep to one country.
The worst cities in Italy for PM2.5 over the 30 days to 14 Oct 2025: Milan 17.2 µg/m³, Jesi 12.2 µg/m³ and Trento 9.6 µg/m³.
- 1MilanLombardy17.2
- 2JesiThe Marches12.2
- 3TrentoTrentino-Alto Adige9.6
- 4Falconara MarittimaThe Marches9.2
- 5RoveretoTrentino-Alto Adige8.5
- 6Borgo ValsuganaTrentino-Alto Adige6.2
- 7GoriziaFriuli Venezia Giulia5.3
Not counted on this day, too few days measured: San Pietro Vernotico since 13 Oct 2025, Laives since 13 Oct 2025, Bolzano since 13 Oct 2025 and 21 more cities.
Cities counted each day
A city's number is its average over the 30 days, shown only when 21 of them were measured (5 of 7 on the 7-day race), the same minimum as the 30- and 7-day boards. A city whose monitors go quiet fades out where it stood rather than sliding down, so a gap never reads as cleaner air. Some large countries are thin or missing because their monitors' licences don't allow reuse. How we rank.
Not covered: the government monitoring networks of China and Turkey, which publish only on their own websites; we are building the readers for them. Most cities there are missing from this board, not clean. Why.