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 21 Jul 2024: Wan Chai 13.6 µg/m³, Mong Kok 7.4 µg/m³ and Tuen Mun 7.1 µg/m³.
- 1Wan ChaiWan Chai13.6
- 2Mong KokYau Tsim Mong District7.4
- 3Tuen MunTuen Mun7.1
- 4FanlingNorth District6.6
- 5Kwai ChungKwai Tsing District5.9
- 6Tai PoTai Po5.8
- 7Tin Shui WaiYuen Long5.7
- 8Sau Mau PingKwun Tong District5.6
- 9Tsuen WanTsuen Wan5.5
- 10Sham Shui PoSham Shui Po District5.5
- 11VictoriaCentral and Western4.3
- 12Sha TinSha Tin3.7
Not counted on this day, too few days measured: San Tung Chung Hang since 12 Jul 2024.
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.