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 to9 May 2026 That day's board

The worst cities in Italy for PM2.5 over the 30 days to 9 May 2026: Nocera Inferiore 14.1 µg/m³, Marigliano 14.1 µg/m³ and Acerra 14.1 µg/m³.

  1. 1Nocera InferioreCampania14.1
  2. 2MariglianoCampania14.1
  3. 3AcerraCampania14.1
  4. 4San Pietro VernoticoApulia13.9
  5. 5CrescentinoPiedmont13.8
  6. 6BraPiedmont13.7
  7. 7NovaraPiedmont13.4
  8. 8JesiThe Marches13.4
  9. 9VigevanoLombardy13.3
  10. 10MortaraLombardy13.3
  11. 11NichelinoPiedmont13.0
  12. 12VinovoPiedmont13.0
  13. 13NaplesCampania12.3
  14. 14BeneventoCampania12.3
  15. 15Sannazzaro de' BurgondiLombardy12.2
  16. 16MilanLombardy11.8
  17. 17TrentoTrentino-Alto Adige11.5
  18. 18CasertaCampania11.5
  19. 19Falconara MarittimaThe Marches11.4
  20. 20Santa Maria A VicoCampania11.3

+ 19 more cities, 11.3 µg/m³ and below

Not counted on this day, too few days measured: Biella since 8 May 2026 and Alessandria since 4 May 2026.

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.