SmogRank / History / City race

Cities in Romania, 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 to5 Oct 2026 That day's board

The worst cities in Romania for PM2.5 over the 30 days to 5 Oct 2026: Târgu Mureş 15.2 µg/m³, Suceava 15.0 µg/m³ and Târgu Jiu 11.8 µg/m³.

  1. 1Târgu MureşMureș County15.2
  2. 2SuceavaSuceava15.0
  3. 3Târgu JiuGorj County11.8
  4. 4RovinariGorj County11.8
  5. 5CraiovaDolj10.8
  6. 6CalafatDolj10.6
  7. 7DejCluj County10.3
  8. 8Sighetu MarmaţieiMaramureş10.2
  9. 9IaşiIași County9.7
  10. 10HolbocaIași County9.7
  11. 11Popeşti-LeordeniIlfov9.2
  12. 12Baia MareMaramureş9.0
  13. 13JilavaIlfov8.9
  14. 14BragadiruIlfov8.8
  15. 15BufteaIlfov8.7
  16. 16TimişoaraTimiș County8.6
  17. 17CodleaBrașov County8.6
  18. 18PiteştiArges8.5
  19. 19BraşovBrașov County8.5
  20. 20Cluj-NapocaCluj County8.1

+ 8 more cities, 7.9 µg/m³ and below

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.