SmogRank / World / Hong Kong / September 2023

Most polluted cities in Hong Kong, September 2023

12 cities in Hong Kong ranked by their average PM2.5 over the 30 days. Worst: Wan Chai at 18.5 µg/m³, #69 of 1,830 cities in the world. Cleanest: Aberdeen at 7.3. A city needs measurements on 70% of the days to be ranked.

← Wan Chai 18.5
Every city in Hong Kong ranked for September 2023, one column each, worst on the left and cleanest on the right. Point at it to read a city; tap to open it.
  1. 1Wan ChaiWan Chai
    18.5
  2. 2San Tung Chung HangIslands
    10.3
  3. 2Mong KokYau Tsim Mong District
    10.3
  4. 4Sham Shui PoSham Shui Po District
    9.9
  5. 5Kwai ChungKwai Tsing District
    9.6
  6. 5FanlingNorth District
    9.6
  7. 7Tsuen WanTsuen Wan
    9.5
  8. 7Tin Shui WaiYuen Long
    9.5
  9. 9Sau Mau PingKwun Tong District
    9.4
  10. 10Tai PoTai Po
    8.6
  11. 11Sha TinSha Tin
    7.6
  12. 12AberdeenSouthern District
    7.3
Good0–5
Fair6–15
Moderate16–50
Poor51–90
Very poor91–140
Extremely poor141+

The European Environment Agency's air quality index bands for PM2.5 (2024 revision); it has bands, not numbers, so values stay in µg/m³. 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, September 2023 · Hong Kong now

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SmogRank, most polluted cities in Hong Kong, PM2.5, September 2023, smogrank.com/hk/history/2023-09 (accessed 2 Oct 2026).

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