HIGHLIGHTS
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Current AQHI: General Stations 3 to 5Roadside Stations 5
Forecast of Health Risk Maximums:
General Stations: Moderate
Roadside Stations: Moderate
Central/Western
Central/Western AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 56.7 PM2.5 32.9
SO2 6.1 PM10 40.9
O3 79.1
Kwai Chung
Kwai Chung AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 58.3 PM2.5 17.9
SO2 3.8 PM10 22.0
O3 52.0
Sham Shui Po
Sham Shui Po AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 70.2 PM2.5 27.9
SO2 6.3 PM10 30.3
O3 59.7
Tai Po
Tai Po AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 49.9 PM2.5 25.7
SO2 5.3 PM10 31.1
O3 90.6
Tap Mun
Tap Mun AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 12.9 PM2.5 22.6
SO2 9.5 PM10 35.0
O3 66.2
Tsuen Wan
Tsuen Wan AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 54.5 PM2.5 15.9
SO2 10.9 PM10 20.1
O3 61.4
Tung Chung
Tung Chung AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 67.2 PM2.5 9.3
SO2 17.2 PM10 15.6
O3 30.3
Yuen Long
Yuen Long AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 44.2 PM2.5 14.0
SO2 8.0 PM10 28.2
O3 46.1
Causeway Bay
Causeway Bay AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 94.1 PM2.5 43.0
SO2 6.4 PM10 57.4
O3 46.7
Central
Central AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 81.0 PM2.5 30.4
SO2 4.2 PM10 37.5
O3 55.6
Sha Tin
Sha Tin AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 34.2 PM2.5 -
SO2 7.2 PM10 -
O3 93.7
Kwun Tong
Kwun Tong AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 31.9 PM2.5 26.9
SO2 5.2 PM10 37.9
O3 88.8
Tseung Kwan O
Tseung Kwan O AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 26.2 PM2.5 23.1
SO2 7.0 PM10 27.6
O3 105.2
Eastern
Eastern AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 49.7 PM2.5 20.9
SO2 4.5 PM10 30.7
O3 96.3
Mong Kok
Mong Kok AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 96.1 PM2.5 36.8
SO2 2.0 PM10 44.3
O3 40.8
Tuen Mun
Tuen Mun AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 88.8 PM2.5 29.0
SO2 13.4 PM10 36.0
O3 7.8
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.  

(4) Owing to equipment maintenance, monitoring of RSP (PM10)  and FSP (PM2.5) at Sha Tin general air quality monitoring station is temporarily suspended. We apologize for any inconvenience caused.

FORECAST of Health Risk
23-03-2017
Tomorrow A.M.
Tomorrow P.M.
General Stations Low to Moderate Low to Moderate
Roadside Stations 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
23:00 23-03-2017 AQHI Health Risk
General Stations Central/Western 5Link to past 24 hrs AQHI trend Moderate
Eastern 5Link to past 24 hrs AQHI trend Moderate
Kwun Tong 4Link to past 24 hrs AQHI trend Moderate
Sham Shui Po 4Link to past 24 hrs AQHI trend Moderate
Kwai Chung 4Link to past 24 hrs AQHI trend Moderate
Tsuen Wan 4Link to past 24 hrs AQHI trend Moderate
Tseung Kwan O 5Link to past 24 hrs AQHI trend Moderate
Yuen Long 3Link to past 24 hrs AQHI trend Low
Tuen Mun 4Link to past 24 hrs AQHI trend Moderate
Tung Chung 3Link to past 24 hrs AQHI trend Low
Tai Po 5Link to past 24 hrs AQHI trend Moderate
Sha Tin 4Link to past 24 hrs AQHI trend Moderate
Tap Mun 4Link to past 24 hrs AQHI trend Moderate
Roadside Stations Causeway Bay 5Link to past 24 hrs AQHI trend Moderate
Central 5Link to past 24 hrs AQHI trend Moderate
Mong Kok 5Link to past 24 hrs AQHI trend Moderate
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Last revision date:23:08 23-03-2017