SmogRank / Countries / Hong Kong / 2025

Most polluted cities in Hong Kong, 2025

14 cities in Hong Kong ranked by their average PM2.5 over the 365 days; 14 above the WHO annual guideline (5.0 µg/m³). Worst: Wan Chai at 23.3 µg/m³, #139 of 2,131 cities in the world. Cleanest: Sha Tin at 12.9. A city needs measurements on 70% of the days to be ranked.

  1. 1Wan ChaiWan Chai
    23.34.7×
  2. 2Tuen MunTuen Mun
    19.23.8×
  3. 3San Tung Chung HangIslands
    16.73.3×
  4. 4Tin Shui WaiYuen Long
    16.63.3×
  5. 5Mong KokYau Tsim Mong District
    16.23.2×
  6. 6FanlingNorth District
    15.93.2×
  7. 7Kwai ChungKwai Tsing District
    15.43.1×
  8. 8Tai PoTai Po
    15.33.1×
  9. 9Sham Shui PoSham Shui Po District
    15.23.0×
  10. 10Tsuen WanTsuen Wan
    14.83.0×
  11. 11Sau Mau PingKwun Tong District
    14.22.8×
  12. 12VictoriaCentral and Western
    13.72.7×
  13. 13AberdeenSouthern District
    13.52.7×
  14. 14Sha TinSha Tin
    12.92.6×
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 · Hong Kong now