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What AQHI should I refer to?

The health effects of air pollution depend on the concentrations of the air pollutants and the duration of exposure. Exposure to moderately high pollution levels for a short period of time normally will not lead to significant health problem.

The general AQHI is more relevant to most of us as it represents the air pollution that we are exposed to for most of the time.  The roadside AQHI is relevant to those who spend several hours continuously in a day in busy streets.

At present, EPD operates 13 general air quality monitoring stations and 3 roadside air quality monitoring stations respectively. Data from these stations will be used for reporting general AQHI and roadside AQHI respectively.

Areas of similar land uses will have similar air pollution levels. If you live in a district that does not have an air quality monitoring station, you may refer to the AQHI measured by the corresponding station as shown in the table below:


General Ambient Air Quality
Monitoring Station
Characteristics of the Area
Where the Station is Located
District(s) Represented by the Station
1. Central/Western Urban: densely populated residential area with commercial developments Central and Western, Wan Chai, Southern (depending on the location)
2. Eastern Urban: densely populated residential area Eastern, Southern (depending on the location)
3. Kwun Tong Urban: densely populated residential area with mixed commercial/industrial developments Kwun Tong, Wong Tai Sin
4. Sham Shui Po Urban: densely populated residential area with commercial developments Sham Shui Po, Yau Tsim Mong, Kowloon City
5. Kwai Chung Urban: densely populated residential area with mixed commercial/industrial developments Kwai Tsing
6. Tsuen Wan Urban: densely populated residential area with mixed commercial/industrial developments Tsuen Wan
7. Tseung Kwan O  Urban: densely populated residential area with mixed commercial/industrial developments  Tseung Kwan O, Sai Kung 
8. Yuen Long New town: residential area Yuen Long (including Tin Shui Wai)
9. Tuen Mun New town: residential area  Tuen Mun 
10. Tung Chung New town: residential area Islands
11. Tai Po New town: residential area Tai Po, North (including Sheung Shui and Fanling)
12. Sha Tin New town: residential area Shatin
13. Tap Mun Rural  
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Last revision date:09:06 22-11-2017