SmogRank / Countries / Romania / April 2026

Most polluted cities in Romania, April 2026

20 cities in Romania ranked by their average PM2.5 over the 30 days. Worst: Târgu Mureş at 21.6 µg/m³, #202 of 2,283 cities in the world. Cleanest: Calafat at 7.9. A city needs measurements on 70% of the days to be ranked.

  1. 1Târgu Mureşlow-cost sensorsMureș County
    21.6
  2. 2SuceavaSuceava
    16.0
  3. 3Sighetu MarmaţieiMaramureş
    14.8
  4. 4DejCluj County
    14.5
  5. 5Baia MareMaramureş
    14.2
  6. 6IaşiIași County
    11.6
  7. 6CraiovaDolj
    11.6
  8. 8Târgu JiuGorj County
    11.4
  9. 9TimişoaraTimiș County
    10.9
  10. 9PiteştiArges
    10.9
  11. 11Cluj-NapocaCluj County
    10.3
  12. 12BufteaIlfov
    10.2
  13. 13VoluntariIlfov
    10.0
  14. 14Popeşti-LeordeniIlfov
    9.8
  15. 15Piatra NeamţNeamț County
    9.5
  16. 16CodleaBrașov County
    9.4
  17. 17BucharestBucharest
    9.3
  18. 18BraşovBrașov County
    9.0
  19. 19ZalăuSălaj County
    8.7
  20. 20CalafatDolj
    7.9
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, April 2026 · Romania now