Article Index

How is the AQHI calculated and reported?

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

Air Quality Monitoring Stations Info
Central/Western AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO230.5PM2.511.8
SO21.5PM1016.9
O352.0
Air Quality Monitoring Stations Info
Kwai Chung AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO220.2PM2.514.6
SO21.6PM1018.5
O358.7
Air Quality Monitoring Stations Info
Sham Shui Po AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO222.5PM2.511.7
SO20.2PM1016.2
O354.0
Air Quality Monitoring Stations Info
Tai Po AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO213.6PM2.513.7
SO21.2PM1018.0
O352.7
Air Quality Monitoring Stations Info
Tap Mun AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2-PM2.515.2
SO2-PM1018.3
O3-
Air Quality Monitoring Stations Info
Tsuen Wan AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO223.4PM2.517.8
SO20.6PM1020.1
O347.5
Air Quality Monitoring Stations Info
Tung Chung AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO238.8PM2.525.9
SO21.6PM1030.3
O325.8
Air Quality Monitoring Stations Info
Yuen Long AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO218.7PM2.516.7
SO20.9PM1020.4
O350.5
Air Quality Monitoring Stations Info
Causeway Bay AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO255.4PM2.520.9
SO22.1PM1028.4
O331.4
Air Quality Monitoring Stations Info
Central AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO261.6PM2.518.0
SO20.9PM1024.5
O322.8
Air Quality Monitoring Stations Info
Sha Tin AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO212.7PM2.513.8
SO22.9PM1018.5
O361.4
Air Quality Monitoring Stations Info
Kwun Tong AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO230.7PM2.54.1
SO23.1PM1012.7
O339.3
Air Quality Monitoring Stations Info
Tseung Kwan O AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO211.8PM2.511.8
SO23.3PM1020.3
O365.4
Air Quality Monitoring Stations Info
Eastern AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO229.2PM2.517.9
SO20.8PM1021.9
O352.0
Air Quality Monitoring Stations Info
Mong Kok AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO247.7PM2.514.9
SO22.1PM1020.3
O332.9
Air Quality Monitoring Stations Info
Tuen Mun AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO219.1PM2.5-
SO22.6PM1028.0
O355.3
Air Quality Monitoring Stations Info
Southern AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO236.3PM2.512.0
SO23.2PM1019.2
O344.4
Air Quality Monitoring Stations Info
North AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO220.2PM2.5-
SO21.4PM1012.0
O348.9
General Station
Roadside Station
Mobile Version | Desktop Version
Last revision date: 16:06 29-03-2024