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 to11 Sep 2025 That day's board

The worst cities in Italy for PM2.5 over the 30 days to 11 Sep 2025: Jesi 16.3 µg/m³, Ceglie Messapica 15.5 µg/m³ and Crescentino 13.2 µg/m³.

  1. 1JesiThe Marches16.3
  2. 2Ceglie MessapicaApulia15.5
  3. 3CrescentinoPiedmont13.2
  4. 4Falconara MarittimaThe Marches12.9
  5. 5TrentoTrentino-Alto Adige12.2
  6. 6NaplesCampania12.1
  7. 7PaviaLombardy11.9
  8. 8MilanLombardy11.7
  9. 9VigevanoLombardy11.6
  10. 10MortaraLombardy11.6
  11. 11AcerraCampania11.6
  12. 12BorgomaneroPiedmont11.0
  13. 13VercelliPiedmont10.7
  14. 14RoveretoTrentino-Alto Adige10.3
  15. 15TurinPiedmont10.2
  16. 16San Pietro VernoticoApulia9.8
  17. 17LaivesTrentino-Alto Adige9.0
  18. 18BolzanoTrentino-Alto Adige9.0
  19. 19CapannoriTuscany8.6
  20. 20BiellaPiedmont8.2

+ 3 more cities, 8.0 µg/m³ and below

Not counted on this day, too few days measured: Novara since 5 Sep 2025, Nichelino since 5 Sep 2025, Vinovo since 5 Sep 2025 and 2 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.