SmogRank / Countries / Romania / September 2025

Most polluted cities in Romania, September 2025

7 cities in Romania ranked by their average PM2.5 over the 30 days. Worst: Iaşi at 10.3 µg/m³, #413 of 2,439 cities in the world. Cleanest: Craiova at 7.3. A city needs measurements on 70% of the days to be ranked.

  1. 1IaşiIași County
    10.3
  2. 2DejCluj County
    9.7
  3. 2CalafatDolj
    9.7
  4. 4BucharestBucharest
    9.0
  5. 5Cluj-NapocaCluj County
    8.9
  6. 6CodleaBrașov County
    8.3
  7. 7CraiovaDolj
    7.3
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 2025 · Romania now

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SmogRank, most polluted cities in Romania, PM2.5, September 2025, smogrank.com/ro/history/2025-09 (accessed 2 Oct 2026).

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