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 to13 May 2025 That day's board

The worst cities in Italy for PM2.5 over the 30 days to 13 May 2025: Jesi 12.5 µg/m³, Ceglie Messapica 12.1 µg/m³ and Milan 9.8 µg/m³.

  1. 1JesiThe Marches12.5
  2. 2Ceglie MessapicaApulia12.1
  3. 3MilanLombardy9.8
  4. 4AcerraCampania9.3
  5. 5VigevanoLombardy9.2
  6. 6NaplesCampania9.2
  7. 7MortaraLombardy9.2
  8. 8PaviaLombardy8.9
  9. 9RoveretoTrentino-Alto Adige7.8
  10. 10VercelliPiedmont7.7
  11. 11TrentoTrentino-Alto Adige7.4
  12. 12San Pietro VernoticoApulia7.3
  13. 13GoriziaFriuli Venezia Giulia7.3
  14. 14Borgo ValsuganaTrentino-Alto Adige5.8
  15. 15LaivesTrentino-Alto Adige5.3
  16. 16BolzanoTrentino-Alto Adige5.3
  17. 17AostaAosta Valley4.1

Not counted on this day, too few days measured: Novara since 13 May 2025, Nichelino since 13 May 2025, Vinovo since 13 May 2025 and 4 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.