SmogRank / Countries / Hong Kong / September 2025

Most polluted cities in Hong Kong, September 2025

13 cities in Hong Kong ranked by their average PM2.5 over the 30 days. Worst: Wan Chai at 15.4 µg/m³, #203 of 2,439 cities in the world. Cleanest: Victoria at 5.2. A city needs measurements on 70% of the days to be ranked.

  1. 1Wan ChaiWan Chai
    15.4
  2. 2FanlingNorth District
    9.1
  3. 3Tin Shui WaiYuen Long
    7.7
  4. 4Mong KokYau Tsim Mong District
    7.6
  5. 5Tuen MunTuen Mun
    7.3
  6. 6Kwai ChungKwai Tsing District
    7.1
  7. 7Sham Shui PoSham Shui Po District
    7.0
  8. 8Tai PoTai Po
    6.8
  9. 9Sau Mau PingKwun Tong District
    6.6
  10. 10Tsuen WanTsuen Wan
    6.4
  11. 11AberdeenSouthern District
    5.7
  12. 12Sha TinSha Tin
    5.2
  13. 12VictoriaCentral and Western
    5.2
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, September 2025 · Hong Kong now