SmogRank / World / Taiwan / Taiwan / January 2026

Most polluted cities in Taiwan, Taiwan, January 2026

36 cities in Taiwan, Taiwan ranked by their average PM2.5 over the 31 days. Worst: Chaozhou at 25.0 µg/m³, #245 of 2,593 cities in the world. Cleanest: Taitung at 7.9. A city needs measurements on 70% of the days to be ranked.

Ranked by unhealthy days: the share of each city's measured days with a daily mean over 35.4 µg/m³ (US AQI 101+), Unhealthy for Sensitive Groups or worse on the US EPA's scale. Ties go to the higher average.

← Chaozhou 6% 6%0
Every city in Taiwan, Taiwan ranked for January 2026, one column each, ranked by unhealthy days: height is the share of its measured days that were unhealthy, colour its average. Point at it to read a city; tap to open it.
  1. 1Chaozhou
    6%
  2. 2Douliu
    6%
  3. 3Chiayi City
    6%
  4. 4Tainan
    6%
  5. 5Yongkang
    3%
  6. 6Erlun
    3%
  7. 7Xinying
    0%
  8. 8Zhushan
    0%
  9. 9Beigang
    0%
  10. 10Taibao
    0%
  11. 11Yuanlin
    0%
  12. 11Puli
    0%
  13. 13Nantou
    0%
  14. 14Erlin
    0%
  15. 15Neili
    0%
  16. 15Lugu
    0%
  17. 17Zhongliao
    0%
  18. 18Taichung
    0%
  19. 18Buzi
    0%
  20. 18Changhua
    0%
  21. 21Daxi
    0%
  22. 21Miaoli
    0%
  23. 23Magong
    0%
  24. 24Toufen
    0%
  25. 24Hsinchu
    0%
  26. 26Shenzhen
    0%
  27. 27Taipei
    0%
  28. 27Xizhou
    0%
  29. 29Taoyuan
    0%
  30. 30Keelung
    0%
  31. 31Zhudong
    0%
  32. 32Yilan
    0%
  33. 33Guanshan
    0%
  34. 34Hualien City
    0%
  35. 35Hengchun
    0%
  36. 36Taitung
    0%
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 · All cities in Taiwan, January 2026 · Taiwan now

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SmogRank, most polluted cities in Taiwan, Taiwan, PM2.5, January 2026, smogrank.com/tw/region/taiwan/history/2026-01 (accessed 6 Oct 2026).

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