SmogRank / Countries / Taiwan / December 2025

Most polluted cities in Taiwan, December 2025

42 cities in Taiwan ranked by their average PM2.5 over the 31 days. Worst: Fengshan at 26.7 µg/m³, #254 of 2,360 cities in the world. Cleanest: Sanzhi at 5.2. A city needs measurements on 70% of the days to be ranked.

  1. 1FengshanTakao
    26.7
  2. 2KaohsiungTakao
    25.1
  3. 3DouliuTaiwan
    24.7
  4. 4JinchengFukien
    23.6
  5. 5TainanTaiwan
    23.0
  6. 6YongkangTaiwan
    22.8
  7. 7ChaozhouTaiwan
    22.7
  8. 8Chiayi CityTaiwan
    22.5
  9. 9XinyingTaiwan
    20.8
  10. 10ErlunTaiwan
    20.7
  11. 11ZhushanTaiwan
    20.1
  12. 12BeigangTaiwan
    19.8
  13. 13YuanlinTaiwan
    18.2
  14. 14NantouTaiwan
    17.7
  15. 15TaibaoTaiwan
    17.6
  16. 16PuliTaiwan
    17.1
  17. 17ErlinTaiwan
    16.5
  18. 18YujingTaiwan
    16.0
  19. 19TaichungTaiwan
    14.4
  20. 20ChanghuaTaiwan
    14.1
  21. 21MagongTaiwan
    13.5
  22. 22ShulinTaipei
    13.1
  23. 22LuguTaiwan
    13.1
  24. 24BuziTaiwan
    13.0
  25. 24NeiliTaiwan
    13.0
  26. 26MiaoliTaiwan
    12.9
  27. 27XizhiTaipei
    12.1
  28. 28XizhouTaiwan
    11.9
  29. 29ToufenTaiwan
    11.7
  30. 30TaipeiTaiwan
    11.6
  31. 31KeelungTaiwan
    11.4
  32. 32New Taipei CityTaipei
    11.1
  33. 33TaoyuanTaiwan
    11.0
  34. 34HsinchuTaiwan
    10.8
  35. 35DaxiTaiwan
    10.2
  36. 35ZhubeiTaiwan
    10.2
  37. 37ZhudongTaiwan
    9.6
  38. 38YilanTaiwan
    8.5
  39. 39TaitungTaiwan
    6.9
  40. 40Hualien CityTaiwan
    6.4
  41. 41HengchunTaiwan
    6.2
  42. 42SanzhiTaipei
    5.2
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 2025 · Taiwan now

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SmogRank, most polluted cities in Taiwan, PM2.5, December 2025, smogrank.com/tw/history/2025-12 (accessed 2 Oct 2026).

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