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 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO24.5PM2.52.3
SO23.1PM1010.5
O358.9
Air Quality Monitoring Stations Info
Kwai Chung AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO22.6PM2.52.6
SO29.0PM107.8
O357.4
Air Quality Monitoring Stations Info
Sham Shui Po AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO27.7PM2.53.2
SO24.6PM1013.8
O355.3
Air Quality Monitoring Stations Info
Tai Po AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO21.8PM2.54.6
SO23.6PM1011.1
O359.4
Air Quality Monitoring Stations Info
Tap Mun AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO20.3PM2.50.2
SO27.1PM1010.5
O363.6
Air Quality Monitoring Stations Info
Tsuen Wan AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2-PM2.51.9
SO2-PM108.3
O3-
Air Quality Monitoring Stations Info
Tung Chung AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2-PM2.52.5
SO2-PM107.8
O3-
Air Quality Monitoring Stations Info
Yuen Long AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2-PM2.51.6
SO2-PM105.1
O3-
Air Quality Monitoring Stations Info
Causeway Bay AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO26.6PM2.53.6
SO22.3PM1012.1
O349.2
Air Quality Monitoring Stations Info
Central AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO25.5PM2.53.4
SO21.6PM1011.9
O351.4
Air Quality Monitoring Stations Info
Sha Tin AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO25.3PM2.54.9
SO27.7PM1011.1
O358.5
Air Quality Monitoring Stations Info
Kwun Tong AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO213.7PM2.56.8
SO26.8PM1016.0
O343.3
Air Quality Monitoring Stations Info
Tseung Kwan O AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO23.2PM2.57.6
SO20.0PM1020.2
O356.2
Air Quality Monitoring Stations Info
Eastern AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO211.2PM2.52.1
SO20.3PM1021.0
O358.0
Air Quality Monitoring Stations Info
Mong Kok AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO211.5PM2.52.7
SO21.6PM1011.9
O335.1
Air Quality Monitoring Stations Info
Tuen Mun AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO23.0PM2.57.0
SO21.6PM1013.1
O354.6
Air Quality Monitoring Stations Info
Southern AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO26.5PM2.56.0
SO21.8PM1014.9
O355.8
Air Quality Monitoring Stations Info
North AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO23.7PM2.53.8
SO25.5PM108.3
O357.9
General Station
Roadside Station
Mobile Version | Desktop Version
Last revision date: 08:07 02-07-2022