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 Apr 2023 That day's board

The worst cities in Italy for PM2.5 over the 30 days to 25 Apr 2023: Alessandria 13.1 µg/m³, Crescentino 12.1 µg/m³ and Naples 11.7 µg/m³.

  1. 1AlessandriaPiedmont13.1
  2. 2CrescentinoPiedmont12.1
  3. 3NaplesCampania11.7
  4. 4JesiThe Marches11.3
  5. 5BeneventoCampania10.9
  6. 6ModugnoApulia10.8
  7. 7TrentoTrentino-Alto Adige10.7
  8. 8RoveretoTrentino-Alto Adige10.0
  9. 9TurinPiedmont9.0
  10. 10LaivesTrentino-Alto Adige8.7
  11. 11Borgo ValsuganaTrentino-Alto Adige8.4
  12. 12BolzanoTrentino-Alto Adige8.4
  13. 13CasertaCampania7.3
  14. 14SalernoCampania7.2
  15. 15La SpeziaLiguria7.1
  16. 16Cairo MontenotteLiguria6.0

Not counted on this day, too few days measured: Falconara Marittima since 19 Apr 2023, Pesaro since 17 Apr 2023, Civitanova Marche since 16 Apr 2023 and 24 more cities. Days missing from the source archive fall in this window, so fewer countries are counted.

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.