SmogRank / Countries / Romania / December 2023

Most polluted cities in Romania, December 2023

5 cities in Romania ranked by their average PM2.5 over the 31 days. Worst: Dej at 35.7 µg/m³, #47 of 1,889 cities in the world. Cleanest: Bucharest at 16.8. A city needs measurements on 70% of the days to be ranked.

  1. 1DejCluj County
    35.7
  2. 2Cluj-NapocaCluj County
    26.0
  3. 3IaşiIași County
    24.3
  4. 4CraiovaDolj
    20.7
  5. 5BucharestBucharest
    16.8
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, December 2023 · Romania now

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SmogRank, most polluted cities in Romania, PM2.5, December 2023, smogrank.com/ro/history/2023-12 (accessed 2 Oct 2026).

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