SmogRank / World / Romania / October 2026

Most polluted cities in Romania, October 2026

20 cities in Romania ranked by their average PM2.5 so far (1 of 31 days). Worst: Târgu Mureş at 20.5 µg/m³, #94 of 1,630 cities in the world. Cleanest: Bucharest at 6.3. A city needs measurements on 70% of the days to be ranked.

← Târgu Mureş 20.5 µg/m³ 20 µg/m³0
Every city in Romania ranked for October 2026, one column each, worst on the left and cleanest on the right; height is PM2.5 in µg/m³. Point at it to read a city; tap to open it.
  1. 1Târgu Mureşlow-cost sensorsMureș County
    72
  2. 2SuceavaSuceava
    68
  3. 3DejCluj County
    62
  4. 4CalafatDolj
    59
  5. 4Baia MareMaramureş
    59
  6. 6Târgu JiuGorj County
    58
  7. 7Sighetu MarmaţieiMaramureş
    57
  8. 8CodleaBrașov County
    56
  9. 9IaşiIași County
    54
  10. 10PiteştiArges
    54
  11. 11Cluj-NapocaCluj County
    53
  12. 12CraiovaDolj
    52
  13. 13TimişoaraTimiș County
    52
  14. 14BraşovBrașov County
    48
  15. 15ZalăuSălaj County
    42
  16. 16Popeşti-LeordeniIlfov
    42
  17. 17Piatra NeamţNeamț County
    41
  18. 17BufteaIlfov
    41
  19. 19VoluntariIlfov
    35
  20. 19BucharestBucharest
    35
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

All cities in the world, October 2026 · Romania now

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SmogRank, most polluted cities in Romania, PM2.5, October 2026 (so far), smogrank.com/ro/history/2026-10 (accessed 2 Oct 2026).

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