SmogRank / World / Taiwan / Taiwan / September 2026

Most polluted cities in Taiwan, Taiwan, September 2026

36 cities in Taiwan, Taiwan ranked by their average PM2.5 over the 30 days. Worst: Zhushan at 14.7 µg/m³, #386 of 2,949 cities in the world. Cleanest: Guanshan at 4.5. 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.

← Zhushan 0% 0.75%0
Every city in Taiwan, Taiwan ranked for September 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. 1Zhushan
    0%
  2. 2Erlin
    0%
  3. 3Yuanlin
    0%
  4. 4Douliu
    0%
  5. 5Beigang
    0%
  6. 6Erlun
    0%
  7. 7Nantou
    0%
  8. 8Tainan
    0%
  9. 9Taichung
    0%
  10. 9Puli
    0%
  11. 11Chiayi City
    0%
  12. 12Taibao
    0%
  13. 13Xinying
    0%
  14. 13Changhua
    0%
  15. 15Lugu
    0%
  16. 15Chaozhou
    0%
  17. 17Zhongliao
    0%
  18. 18Xizhou
    0%
  19. 19Buzi
    0%
  20. 20Yongkang
    0%
  21. 21Neili
    0%
  22. 22Miaoli
    0%
  23. 22Taoyuan
    0%
  24. 24Shenzhen
    0%
  25. 25Taipei
    0%
  26. 26Hsinchu
    0%
  27. 27Zhudong
    0%
  28. 28Magong
    0%
  29. 29Daxi
    0%
  30. 29Yilan
    0%
  31. 31Keelung
    0%
  32. 32Toufen
    0%
  33. 32Taitung
    0%
  34. 34Hualien City
    0%
  35. 34Hengchun
    0%
  36. 36Guanshan
    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, September 2026 · All cities in Taiwan, September 2026 · Taiwan now

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SmogRank, most polluted cities in Taiwan, Taiwan, PM2.5, September 2026, smogrank.com/tw/region/taiwan/history/2026-09 (accessed 6 Oct 2026).

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