SmogRank / World / Taiwan / Taiwan / 2026

Most polluted cities in Taiwan, Taiwan, 2026

36 cities in Taiwan, Taiwan ranked by their average PM2.5 so far (278 of 365 days); 36 above the WHO annual guideline (5.0 µg/m³). Worst: Douliu at 16.8 µg/m³, #467 of 2,745 cities in the world. Cleanest: Hengchun at 7.0. 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.

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

Use this board

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

Download top 10 (PNG)

You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.