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 18 Jun 2024: Wan Chai 16.6 µg/m³, Tuen Mun 11.1 µg/m³ and Mong Kok 10.7 µg/m³.
- 1Wan ChaiWan Chai16.6
- 2Tuen MunTuen Mun11.1
- 3Mong KokYau Tsim Mong District10.7
- 4Kwai ChungKwai Tsing District9.4
- 5Sham Shui PoSham Shui Po District9.1
- 6Tsuen WanTsuen Wan8.3
- 7Sau Mau PingKwun Tong District8.2
- 8Tai PoTai Po7.8
- 9VictoriaCentral and Western7.5
- 10Sha TinSha Tin5.7
Not counted on this day, too few days measured: San Tung Chung Hang since 27 May 2024 and Tin Shui Wai since 24 May 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.