SmogRank / History / City race
Cities in Hong Kong, worst air first, day by day
Each measured city's average over the 30 days to every day since January 2023, worst first. Find your own city to follow it through the race, or keep to one country.
The worst cities in Hong Kong for PM2.5 over the 30 days to 16 Sep 2024: Wan Chai 20.7 µg/m³, Tuen Mun 13.8 µg/m³ and Fanling 13.5 µg/m³.
- 1Wan ChaiWan Chai20.7
- 2Tuen MunTuen Mun13.8
- 3FanlingNorth District13.5
- 4Tin Shui WaiYuen Long13.2
- 5Mong KokYau Tsim Mong District13.2
- 6Kwai ChungKwai Tsing District12.3
- 7Tai PoTai Po12.0
- 8Tsuen WanTsuen Wan11.9
- 9San Tung Chung HangIslands11.7
- 10Sham Shui PoSham Shui Po District11.0
- 11Sau Mau PingKwun Tong District10.5
- 12VictoriaCentral and Western9.5
- 13Sha TinSha Tin9.1
Cities counted each day
A city's number is its average over the 30 days, shown only when 21 of them were measured (5 of 7 on the 7-day race), the same minimum as the 30- and 7-day boards. A city whose monitors go quiet fades out where it stood rather than sliding down, so a gap never reads as cleaner air. Some large countries are thin or missing because their monitors' licences don't allow reuse. How we rank.
Not covered: the government monitoring networks of China and Turkey, which publish only on their own websites; we are building the readers for them. Most cities there are missing from this board, not clean. Why.