SmogRank / Countries / Romania / 2025

Most polluted cities in Romania, 2025

6 cities in Romania ranked by their average PM2.5 over the 365 days; 6 above the WHO annual guideline (5.0 µg/m³). Worst: Dej at 21.6 µg/m³, #151 of 2,131 cities in the world. Cleanest: Craiova at 13.3. A city needs measurements on 70% of the days to be ranked.

  1. 1DejCluj County
    21.64.3×
  2. 2CodleaBrașov County
    19.03.8×
  3. 3Cluj-NapocaCluj County
    15.03.0×
  4. 4BucharestBucharest
    14.22.8×
  5. 5IaşiIași County
    13.82.8×
  6. 6CraiovaDolj
    13.32.7×
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, 2025 · Romania now