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 to12 May 2026 That day's board

The worst cities in Italy for PM2.5 over the 30 days to 12 May 2026: Marigliano 13.2 µg/m³, Nocera Inferiore 13.1 µg/m³ and Acerra 13.1 µg/m³.

  1. 1MariglianoCampania13.2
  2. 2Nocera InferioreCampania13.1
  3. 3AcerraCampania13.1
  4. 4JesiThe Marches13.0
  5. 5CrescentinoPiedmont12.8
  6. 6Sannazzaro de' BurgondiLombardy12.4
  7. 7VigevanoLombardy12.3
  8. 8MortaraLombardy12.3
  9. 9NovaraPiedmont12.1
  10. 10NaplesCampania12.1
  11. 11Cava Dè TirreniCampania11.4
  12. 12BeneventoCampania11.4
  13. 13NichelinoPiedmont11.3
  14. 14MilanLombardy11.3
  15. 15VinovoPiedmont11.3
  16. 16Falconara MarittimaThe Marches11.1
  17. 17TrentoTrentino-Alto Adige10.9
  18. 18CasertaCampania10.9
  19. 19SolofraCampania10.8
  20. 20Santa Maria A VicoCampania10.8

+ 16 more cities, 10.8 µg/m³ and below

Not counted on this day, too few days measured: Laives since 10 May 2026, Bra since 10 May 2026, Bolzano since 10 May 2026 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.