SmogRank / World / Romania / January 2026

Most polluted cities in Romania, January 2026

19 cities in Romania ranked by their average PM2.5 over the 31 days. Worst: Târgu Mureş at 97.7 µg/m³, #12 of 2,281 cities in the world. Cleanest: Braşov at 21.2. A city needs measurements on 70% of the days to be ranked.

← Târgu Mureş 97.7
Every city in Romania ranked for January 2026, one column each, worst on the left and cleanest on the right. Point at it to read a city; tap to open it.
  1. 1Târgu Mureşlow-cost sensorsMureș County
    181
  2. 2Sighetu MarmaţieiMaramureş
    171
  3. 3DejCluj County
    170
  4. 4Târgu JiuGorj County
    161
  5. 5Baia MareMaramureş
    145
  6. 6Cluj-NapocaCluj County
    112
  7. 7CraiovaDolj
    108
  8. 8CodleaBrașov County
    101
  9. 9SuceavaSuceava
    95
  10. 10ZalăuSălaj County
    91
  11. 11VoluntariIlfov
    88
  12. 11CalafatDolj
    88
  13. 13BufteaIlfov
    86
  14. 14IaşiIași County
    84
  15. 15Piatra NeamţNeamț County
    84
  16. 16Popeşti-LeordeniIlfov
    82
  17. 17TimişoaraTimiș County
    80
  18. 18BucharestBucharest
    78
  19. 19BraşovBrașov County
    74
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, January 2026 · Romania now

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SmogRank, most polluted cities in Romania, PM2.5, January 2026, smogrank.com/ro/history/2026-01 (accessed 2 Oct 2026).

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