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 to20 Nov 2023 That day's board

The worst cities in Italy for PM2.5 over the 30 days to 20 Nov 2023: Alessandria 21.8 µg/m³, Crescentino 16.1 µg/m³ and Turin 14.8 µg/m³.

  1. 1AlessandriaPiedmont21.8
  2. 2CrescentinoPiedmont16.1
  3. 3TurinPiedmont14.8
  4. 4CapannoriTuscany14.5
  5. 5ChiaravalleThe Marches13.1
  6. 6JesiThe Marches12.1
  7. 7NaplesCampania10.0
  8. 8AnconaThe Marches9.4
  9. 9LaivesTrentino-Alto Adige9.3
  10. 10BolzanoTrentino-Alto Adige9.3
  11. 11Borgo ValsuganaTrentino-Alto Adige9.2
  12. 12BeneventoCampania9.0
  13. 13Cairo MontenotteLiguria8.1
  14. 14Porto Potenza PicenaThe Marches7.8
  15. 15Civitanova MarcheThe Marches7.8
  16. 16La SpeziaLiguria7.3
  17. 17SalernoCampania6.9
  18. 18CasertaCampania6.6

Not counted on this day, too few days measured: Prato since 6 Nov 2023, Pisa since 6 Nov 2023, Montemurlo since 6 Nov 2023 and 11 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.