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.

CountriesCities
The 30 days to10 Oct 2025 That day's board

The worst cities in Italy for PM2.5 over the 30 days to 10 Oct 2025: Milan 14.9 µg/m³, Jesi 12.2 µg/m³ and Nichelino 11.6 µg/m³.

  1. 1MilanLombardy14.9
  2. 2JesiThe Marches12.2
  3. 3NichelinoPiedmont11.6
  4. 4VinovoPiedmont11.6
  5. 5San Pietro VernoticoApulia10.9
  6. 6Sannazzaro de' BurgondiLombardy10.1
  7. 7VigevanoLombardy9.9
  8. 8MortaraLombardy9.9
  9. 9TrentoTrentino-Alto Adige9.1
  10. 10Falconara MarittimaThe Marches9.0
  11. 11RoveretoTrentino-Alto Adige8.5
  12. 12LaivesTrentino-Alto Adige7.5
  13. 13BolzanoTrentino-Alto Adige7.5
  14. 14Borgo ValsuganaTrentino-Alto Adige6.0
  15. 15AostaAosta Valley5.5
  16. 16GoriziaFriuli Venezia Giulia5.3

Not counted on this day, too few days measured: Pavia since 10 Oct 2025, Capannori since 10 Oct 2025, Vercelli since 9 Oct 2025 and 12 more cities.

30 days7 days
GoodModerateSensitive groupsUnhealthyVery unhealthyHazardousWHO 24-hour guideline, 15 µg/m³Fades where it stood: not counted that 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.