SmogRank / Countries / Taiwan / 2025

Most polluted cities in Taiwan, 2025

27 cities in Taiwan ranked by their average PM2.5 over the 365 days; 27 above the WHO annual guideline (5.0 µg/m³). Worst: Fengshan at 21.3 µg/m³, #155 of 2,131 cities in the world. Cleanest: Taitung at 6.8. A city needs measurements on 70% of the days to be ranked.

  1. 1FengshanTakao
    21.34.3×
  2. 2KaohsiungTakao
    19.33.9×
  3. 3DouliuTaiwan
    19.13.8×
  4. 4ErlunTaiwan
    18.63.7×
  5. 5ChaozhouTaiwan
    18.33.7×
  6. 6TainanTaiwan
    17.93.6×
  7. 7YongkangTaiwan
    17.83.6×
  8. 8YuanlinTaiwan
    17.33.5×
  9. 9XinyingTaiwan
    17.13.4×
  10. 10BeigangTaiwan
    16.93.4×
  11. 11ZhushanTaiwan
    16.83.4×
  12. 12ErlinTaiwan
    15.93.2×
  13. 13TaichungTaiwan
    14.93.0×
  14. 14ChanghuaTaiwan
    14.52.9×
  15. 15NeiliTaiwan
    13.82.8×
  16. 16ToufenTaiwan
    13.32.7×
  17. 17HsinchuTaiwan
    13.22.6×
  18. 18MiaoliTaiwan
    12.92.6×
  19. 18ZhubeiTaiwan
    12.92.6×
  20. 18TaoyuanTaiwan
    12.92.6×
  21. 21XizhouTaiwan
    12.82.6×
  22. 22TaipeiTaiwan
    12.62.5×
  23. 22New Taipei CityTaipei
    12.62.5×
  24. 24MagongTaiwan
    11.92.4×
  25. 25ZhudongTaiwan
    11.52.3×
  26. 26Hualien CityTaiwan
    7.41.5×
  27. 27TaitungTaiwan
    6.81.4×
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, 2025 · Taiwan now