SmogRank / World / Taiwan / Taiwan / February 2025

Most polluted cities in Taiwan, Taiwan, February 2025

35 cities in Taiwan, Taiwan ranked by their average PM2.5 over the 28 days. Worst: Chaozhou at 28.7 µg/m³, #226 of 2,574 cities in the world. Cleanest: Hualien City at 5.7. 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 21% 20%0
Every city in Taiwan, Taiwan ranked for February 2025, 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
    21%
  2. 2Chiayi City
    21%
  3. 3Douliu
    21%
  4. 4Zhushan
    18%
  5. 5Tainan
    14%
  6. 6Yongkang
    14%
  7. 7Beigang
    14%
  8. 8Xinying
    11%
  9. 9Erlun
    11%
  10. 10Taibao
    11%
  11. 11Erlin
    11%
  12. 12Zhongliao
    11%
  13. 13Shenzhen
    11%
  14. 14Neili
    7%
  15. 15Taipei
    7%
  16. 16Yuanlin
    4%
  17. 17Buzi
    4%
  18. 17Hsinchu
    4%
  19. 19Magong
    4%
  20. 20Toufen
    4%
  21. 21Taoyuan
    4%
  22. 22Keelung
    4%
  23. 23Nantou
    0%
  24. 24Taichung
    0%
  25. 24Changhua
    0%
  26. 26Puli
    0%
  27. 27Miaoli
    0%
  28. 28Xizhou
    0%
  29. 29Daxi
    0%
  30. 30Zhudong
    0%
  31. 31Yilan
    0%
  32. 32Guanshan
    0%
  33. 33Hengchun
    0%
  34. 34Taitung
    0%
  35. 35Hualien City
    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, February 2025 · All cities in Taiwan, February 2025 · Taiwan now

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SmogRank, most polluted cities in Taiwan, Taiwan, PM2.5, February 2025, smogrank.com/tw/region/taiwan/history/2025-02 (accessed 6 Oct 2026).

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