HIGHLIGHTS
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Current AQHI: General Stations 3 to 4Roadside Stations 3 to 4
Forecast of Health Risk Maximums:
General Stations: Moderate
Roadside Stations: Moderate
Central/Western
Central/Western AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 15.6 PM2.5 15.3
SO2 4.2 PM10 17.3
O3 73.6
Kwai Chung
Kwai Chung AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 20.8 PM2.5 -
SO2 1.8 PM10 16.2
O3 68.6
Sham Shui Po
Sham Shui Po AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 28.6 PM2.5 4.9
SO2 4.9 PM10 5.2
O3 63.1
Tai Po
Tai Po AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 23.2 PM2.5 11.6
SO2 1.3 PM10 14.2
O3 67.6
Tap Mun
Tap Mun AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 7.0 PM2.5 13.7
SO2 7.8 PM10 19.1
O3 83.1
Tsuen Wan
Tsuen Wan AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 19.2 PM2.5 7.9
SO2 9.3 PM10 8.5
O3 70.9
Tung Chung
Tung Chung AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 10.4 PM2.5 -
SO2 6.4 PM10 -
O3 63.8
Yuen Long
Yuen Long AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 21.0 PM2.5 9.7
SO2 7.3 PM10 15.7
O3 63.5
Causeway Bay
Causeway Bay AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 67.3 PM2.5 17.2
SO2 4.3 PM10 20.7
O3 32.9
Central
Central AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 21.7 PM2.5 -
SO2 1.4 PM10 0.7
O3 73.7
Sha Tin
Sha Tin AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 12.7 PM2.5 2.9
SO2 4.8 PM10 3.8
O3 75.5
Kwun Tong
Kwun Tong AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 14.4 PM2.5 9.1
SO2 3.7 PM10 16.1
O3 79.2
Tseung Kwan O
Tseung Kwan O AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 11.7 PM2.5 16.9
SO2 5.6 PM10 18.5
O3 83.8
Eastern
Eastern AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 23.7 PM2.5 10.8
SO2 1.8 PM10 16.8
O3 76.4
Mong Kok
Mong Kok AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 48.6 PM2.5 10.1
SO2 1.3 PM10 11.0
O3 41.4
Tuen Mun
Tuen Mun AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 30.1 PM2.5 13.0
SO2 3.3 PM10 14.9
O3 41.7
General Station
Roadside Station
Suspended
Remark:

(1) The AQHI information is based on raw data taken directly from EPD's Air Quality Monitoring Network.

(2) The hourly reported AQHI is for short term health risk communication; for health risks of long-term exposure of the air quality, please refer to Annual Air Quality Index (Annual AQI).

(3) In case of station or equipment suspension due to maintenance, the data collection for calculation of AQHI at station will be affected, the data of a most similar station will then be adopted. Such AQHI will be shown in italics.

FORECAST of Health Risk
22-02-2017
Today A.M.
Today P.M.
General Stations Low to Moderate Low to Moderate
Roadside Stations Low to Moderate Low to Moderate
低(LOW)[1-3] 中(MODERATE)[4-6] 高(HIGH)[7] 甚高(VERY HIGH)[8-10] 嚴重(SERIOUS)[10+]
Air Quality Health Index
02:00 22-02-2017 AQHI Health Risk
General Stations Central/Western 3Link to past 24 hrs AQHI trend Low
Eastern 4Link to past 24 hrs AQHI trend Moderate
Kwun Tong 3Link to past 24 hrs AQHI trend Low
Sham Shui Po 3Link to past 24 hrs AQHI trend Low
Kwai Chung 3Link to past 24 hrs AQHI trend Low
Tsuen Wan 3Link to past 24 hrs AQHI trend Low
Tseung Kwan O 4Link to past 24 hrs AQHI trend Moderate
Yuen Long 3Link to past 24 hrs AQHI trend Low
Tuen Mun 3Link to past 24 hrs AQHI trend Low
Tung Chung 3Link to past 24 hrs AQHI trend Low
Tai Po 3Link to past 24 hrs AQHI trend Low
Sha Tin 3Link to past 24 hrs AQHI trend Low
Tap Mun 3Link to past 24 hrs AQHI trend Low
Roadside Stations Causeway Bay 4Link to past 24 hrs AQHI trend Moderate
Central 3Link to past 24 hrs AQHI trend Low
Mong Kok 3Link to past 24 hrs AQHI trend Low
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Last revision date:02:08 22-02-2017