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 to25 Oct 2023 That day's board

The worst cities in Italy for PM2.5 over the 30 days to 25 Oct 2023: Chiaravalle 20.2 µg/m³, Crescentino 19.5 µg/m³ and Alessandria 19.5 µg/m³.

  1. 1ChiaravalleThe Marches20.2
  2. 2CrescentinoPiedmont19.5
  3. 3AlessandriaPiedmont19.5
  4. 4NaplesCampania18.4
  5. 5TurinPiedmont15.0
  6. 6AnconaThe Marches14.6
  7. 7TrentoTrentino-Alto Adige14.4
  8. 8Porto Potenza PicenaThe Marches14.3
  9. 9Civitanova MarcheThe Marches14.3
  10. 10LaivesTrentino-Alto Adige14.2
  11. 11BolzanoTrentino-Alto Adige14.2
  12. 12RoveretoTrentino-Alto Adige13.7
  13. 13SalernoCampania13.6
  14. 14MontemurloTuscany13.0
  15. 15JesiThe Marches12.7
  16. 16CapannoriTuscany12.7
  17. 17BeneventoCampania12.7
  18. 18La SpeziaLiguria12.4
  19. 19PratoTuscany12.2
  20. 20PisaTuscany12.1

+ 9 more cities, the next at 12.1 µg/m³

Not counted on this day, too few days measured: Falconara Marittima since 25 Oct 2023, Cairo Montenotte since 20 Oct 2023, Pesaro since 17 Oct 2023 and Modugno since 4 Sep 2023.

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 reader for China's network. Turkey's network doesn't answer requests from outside the country, so we can't read it. Most cities there are missing from this board, not clean. Why.