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 6 Oct 2026: Nichelino 14.4 µg/m³, Vinovo 14.4 µg/m³ and Alessandria 13.9 µg/m³.
- 1NichelinoPiedmont14.4
- 2VinovoPiedmont14.4
- 3AlessandriaPiedmont13.9
- 4TurinPiedmont13.4
- 5AostaAosta Valley13.1
- 6BeneventoCampania10.9
- 7TrentoTrentino-Alto Adige10.6
- 8RoveretoTrentino-Alto Adige10.2
- 9CasertaCampania9.7
- 10NaplesCampania9.3
- 11LaivesTrentino-Alto Adige8.2
- 12BolzanoTrentino-Alto Adige8.1
- 13Borgo ValsuganaTrentino-Alto Adige7.8
- 14GoriziaFriuli Venezia Giulia5.6
Not counted on this day, too few days measured: Milan since 6 Oct 2026, Biella since 6 Oct 2026, Salerno since 5 Oct 2026 and 17 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.