SmogRank / Countries / Romania / September 2026

Most polluted cities in Romania, September 2026

19 cities in Romania ranked by their average PM2.5 over the 30 days. Worst: Suceava at 14.2 µg/m³, #255 of 2,332 cities in the world. Cleanest: Piatra Neamţ at 6.7. A city needs measurements on 70% of the days to be ranked.

  1. 1SuceavaSuceava
    14.2
  2. 2Târgu Mureşlow-cost sensorsMureș County
    13.1
  3. 3CalafatDolj
    10.0
  4. 4Sighetu MarmaţieiMaramureş
    9.5
  5. 5Popeşti-LeordeniIlfov
    9.4
  6. 5CraiovaDolj
    9.4
  7. 7IaşiIași County
    9.3
  8. 7DejCluj County
    9.3
  9. 9Târgu JiuGorj County
    9.1
  10. 10BufteaIlfov
    8.5
  11. 11VoluntariIlfov
    8.2
  12. 12BucharestBucharest
    7.9
  13. 12BraşovBrașov County
    7.9
  14. 14TimişoaraTimiș County
    7.7
  15. 14CodleaBrașov County
    7.7
  16. 14Baia MareMaramureş
    7.7
  17. 17Cluj-NapocaCluj County
    7.3
  18. 18ZalăuSălaj County
    6.8
  19. 19Piatra NeamţNeamț County
    6.7
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

All cities in the world, September 2026 · Romania now