SmogRank / Countries / Hong Kong / May 2026

Most polluted cities in Hong Kong, May 2026

14 cities in Hong Kong ranked by their average PM2.5 over the 31 days. Worst: Wan Chai at 18.7 µg/m³, #200 of 2,243 cities in the world. Cleanest: Tsuen Wan at 9.4. A city needs measurements on 70% of the days to be ranked.

  1. 1Wan ChaiWan Chai
    18.7
  2. 2Tuen MunTuen Mun
    13.8
  3. 3Mong KokYau Tsim Mong District
    11.6
  4. 3FanlingNorth District
    11.6
  5. 5Sau Mau PingKwun Tong District
    11.5
  6. 5Kwai ChungKwai Tsing District
    11.5
  7. 7Sham Shui PoSham Shui Po District
    11.4
  8. 8Tai PoTai Po
    10.9
  9. 9AberdeenSouthern District
    10.5
  10. 10VictoriaCentral and Western
    10.4
  11. 11Tin Shui WaiYuen Long
    10.3
  12. 12Sha TinSha Tin
    10.1
  13. 13San Tung Chung HangIslands
    10.0
  14. 14Tsuen WanTsuen Wan
    9.4
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, May 2026 · Hong Kong now