SmogRank / Countries / Taiwan / January 2025

Most polluted cities in Taiwan, January 2025

40 cities in Taiwan ranked by their average PM2.5 over the 31 days. Worst: Fengshan at 30.1 µg/m³, #60 of 1,937 cities in the world. Cleanest: Sanzhi at 8.3. A city needs measurements on 70% of the days to be ranked.

  1. 1FengshanTakao
    30.1
  2. 2KaohsiungTakao
    29.6
  3. 3ChaozhouTaiwan
    28.9
  4. 4JinchengFukien
    27.8
  5. 5DouliuTaiwan
    25.8
  6. 6Chiayi CityTaiwan
    25.2
  7. 7TainanTaiwan
    24.8
  8. 8YongkangTaiwan
    24.7
  9. 9XinyingTaiwan
    24.1
  10. 10ErlunTaiwan
    23.5
  11. 11ZhushanTaiwan
    22.7
  12. 12YuanlinTaiwan
    21.2
  13. 13BeigangTaiwan
    20.9
  14. 14NantouTaiwan
    20.1
  15. 15TaibaoTaiwan
    20.0
  16. 16ErlinTaiwan
    18.8
  17. 17BuziTaiwan
    18.3
  18. 18TaichungTaiwan
    17.9
  19. 19ChanghuaTaiwan
    17.5
  20. 20MagongTaiwan
    16.7
  21. 21NeiliTaiwan
    16.6
  22. 22HsinchuTaiwan
    16.2
  23. 23ToufenTaiwan
    16.1
  24. 23MiaoliTaiwan
    16.1
  25. 25DaxiTaiwan
    15.4
  26. 25XizhouTaiwan
    15.4
  27. 27PuliTaiwan
    15.3
  28. 28ZhubeiTaiwan
    15.1
  29. 29XizhiTaipei
    14.7
  30. 30TaipeiTaiwan
    14.5
  31. 31ShulinTaipei
    14.0
  32. 31New Taipei CityTaipei
    14.0
  33. 33ZhudongTaiwan
    12.7
  34. 34KeelungTaiwan
    12.3
  35. 35TaoyuanTaiwan
    11.9
  36. 36YilanTaiwan
    11.6
  37. 37Hualien CityTaiwan
    10.2
  38. 38HengchunTaiwan
    9.7
  39. 39TaitungTaiwan
    9.0
  40. 40SanzhiTaipei
    8.3
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, January 2025 · Taiwan now

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SmogRank, most polluted cities in Taiwan, PM2.5, January 2025, smogrank.com/tw/history/2025-01 (accessed 2 Oct 2026).

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