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 to7 Feb 2026 That day's board

The worst cities in Romania for PM2.5 over the 30 days to 7 Feb 2026: Târgu Mureş 99.8 µg/m³, Sighetu Marmaţiei 78.0 µg/m³ and Dej 76.1 µg/m³.

  1. 1Târgu MureşMureș County99.8
  2. 2Sighetu MarmaţieiMaramureş78.0
  3. 3DejCluj County76.1
  4. 4Târgu JiuGorj County67.4
  5. 5RovinariGorj County61.5
  6. 6Baia MareMaramureş44.4
  7. 7ModeluCălărași County38.9
  8. 8Cluj-NapocaCluj County38.1
  9. 9CraiovaDolj37.7
  10. 10SuceavaSuceava34.1
  11. 11CodleaBrașov County33.2
  12. 12CalafatDolj30.5
  13. 13BragadiruIlfov28.9
  14. 14ZalăuSălaj County28.7
  15. 15PiteştiArges28.3
  16. 16Piatra NeamţNeamț County28.0
  17. 17BufteaIlfov27.8
  18. 18VoluntariIlfov27.2
  19. 19JilavaIlfov26.6
  20. 20OtopeniIlfov25.7

+ 9 more cities, 25.7 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.