SmogRank / World / Hong Kong / March 2025

Most polluted cities in Hong Kong, March 2025

13 cities in Hong Kong ranked by their average PM2.5 over the 31 days. Worst: Wan Chai at 22.4 µg/m³, #462 of 2,500 cities in the world. Cleanest: Sha Tin at 12.4. A city needs measurements on 70% of the days to be ranked.

← Wan Chai 22.4 µg/m³ 20 µg/m³0
Every city in Hong Kong ranked for March 2025, one column each, worst on the left and cleanest on the right; height is PM2.5 in µg/m³. Point at it to read a city; tap to open it.
  1. 1Wan ChaiWan Chai
    3
  2. 2Tuen MunTuen Mun
    2
  3. 3Mong KokYau Tsim Mong District
    2
  4. 4Tin Shui WaiYuen Long
    2
  5. 5Tsuen WanTsuen Wan
    2
  6. 6Sham Shui PoSham Shui Po District
    2
  7. 7Kwai ChungKwai Tsing District
    2
  8. 8Tai PoTai Po
    2
  9. 9FanlingNorth District
    2
  10. 10San Tung Chung HangIslands
    2
  11. 10VictoriaCentral and Western
    2
  12. 12Sau Mau PingKwun Tong District
    2
  13. 13Sha TinSha Tin
    2
Low risk1–3
Moderate risk4–6
High risk7–10
Very high risk10+

Canada's AQHI+ for PM2.5 (1 point per 10 µg/m³), which is defined on hourly values. 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, March 2025 · Hong Kong now

Use this board

SmogRank, most polluted cities in Hong Kong, PM2.5, March 2025, smogrank.com/hk/history/2025-03 (accessed 2 Oct 2026).

Download top 10 (PNG)

You're welcome to reuse a single chart, image or figure with this citation and a link. Terms.