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 11 Oct 2025: Milan 15.2 µg/m³, Jesi 12.3 µg/m³ and Sannazzaro de' Burgondi 10.2 µg/m³.
- 1MilanLombardy15.2
- 2JesiThe Marches12.3
- 3Sannazzaro de' BurgondiLombardy10.2
- 4TrentoTrentino-Alto Adige9.2
- 5Falconara MarittimaThe Marches9.0
- 6San Pietro VernoticoApulia8.8
- 7RoveretoTrentino-Alto Adige8.5
- 8LaivesTrentino-Alto Adige7.6
- 9BolzanoTrentino-Alto Adige7.6
- 10Borgo ValsuganaTrentino-Alto Adige6.1
- 11AostaAosta Valley5.5
- 12GoriziaFriuli Venezia Giulia5.3
Not counted on this day, too few days measured: Vigevano since 11 Oct 2025, Nichelino since 11 Oct 2025, Mortara since 11 Oct 2025 and 16 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.