About AQHI - How is the AQHI calculated and reported?

Article Index

How is the AQHI calculated and reported?

aqms.jpg

AQHIs are calculated based on the cumulative health risk attributable to the 3-hour moving average concentrations of four air pollutants namely, ozone (O3), nitrogen dioxide (NO2), sulphur dioxide (SO2) and particulate matter (PM2.5/ PM10). The risk factors of each pollutant were obtained from local health studies.

The map below shows the locations of air quality monitoring stations.

Air Quality Monitoring Stations Info
Central/Western AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 58.1 PM2.5 28.1
SO2 4.4 PM10 62.6
O3 67.6
Air Quality Monitoring Stations Info
Kwai Chung AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 78.9 PM2.5 27.5
SO2 1.8 PM10 71.0
O3 47.9
Air Quality Monitoring Stations Info
Sham Shui Po AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 90.5 PM2.5 31.7
SO2 3.8 PM10 60.0
O3 41.8
Air Quality Monitoring Stations Info
Tai Po AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 28.2 PM2.5 24.5
SO2 1.0 PM10 54.0
O3 105.8
Air Quality Monitoring Stations Info
Tap Mun AQHI -
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 4.5 PM2.5 20.9
SO2 7.7 PM10 66.4
O3 134.3
Air Quality Monitoring Stations Info
Tsuen Wan AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 82.6 PM2.5 25.2
SO2 4.8 PM10 57.8
O3 55.2
Air Quality Monitoring Stations Info
Tung Chung AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 61.8 PM2.5 21.3
SO2 23.1 PM10 57.3
O3 43.9
Air Quality Monitoring Stations Info
Yuen Long AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 63.1 PM2.5 26.7
SO2 8.1 PM10 66.4
O3 50.0
Air Quality Monitoring Stations Info
Causeway Bay AQHI 6
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 159.1 PM2.5 44.4
SO2 13.9 PM10 87.7
O3 8.7
Air Quality Monitoring Stations Info
Central AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 114.8 PM2.5 28.8
SO2 6.3 PM10 60.0
O3 30.6
Air Quality Monitoring Stations Info
Sha Tin AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 25.8 PM2.5 22.9
SO2 5.1 PM10 58.4
O3 103.5
Air Quality Monitoring Stations Info
Kwun Tong AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 31.9 PM2.5 28.0
SO2 0.8 PM10 80.0
O3 -
Air Quality Monitoring Stations Info
Tseung Kwan O AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 16.7 PM2.5 -
SO2 3.4 PM10 -
O3 115.1
Air Quality Monitoring Stations Info
Eastern AQHI 6
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 49.0 PM2.5 23.7
SO2 2.2 PM10 81.6
O3 96.9
Air Quality Monitoring Stations Info
Mong Kok AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 130.9 PM2.5 32.6
SO2 4.3 PM10 65.7
O3 21.1
Air Quality Monitoring Stations Info
Tuen Mun AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 90.1 PM2.5 31.0
SO2 12.6 PM10 79.1
O3 31.8
General Station
Roadside Station
Mobile Version | Desktop Version
Last revision date:20:05 22-02-2018