HIGHLIGHTS
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Current AQHI: General Stations 4 to 7Roadside Stations 6 to 7
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 142.3 PM2.5 45.1
SO2 12.4 PM10 66.0
O3 3.6
Kwai Chung
Kwai Chung AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 145.0 PM2.5 32.4
SO2 12.6 PM10 51.2
O3 12.9
Sham Shui Po
Sham Shui Po AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 129.9 PM2.5 34.7
SO2 6.7 PM10 45.1
O3 14.5
Tai Po
Tai Po AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 127.2 PM2.5 49.2
SO2 4.1 PM10 70.9
O3 2.2
Tap Mun
Tap Mun AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 30.5 PM2.5 23.4
SO2 5.6 PM10 31.8
O3 36.5
Tsuen Wan
Tsuen Wan AQHI 7
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 199.0 PM2.5 77.9
SO2 31.3 PM10 106.0
O3 4.1
Tung Chung
Tung Chung AQHI 6
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 119.2 PM2.5 60.1
SO2 10.5 PM10 85.6
O3 1.1
Yuen Long
Yuen Long AQHI 6
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 150.2 PM2.5 64.3
SO2 5.5 PM10 114.8
O3 15.6
Causeway Bay
Causeway Bay AQHI 6
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 154.5 PM2.5 70.7
SO2 3.6 PM10 103.6
O3 5.7
Central
Central AQHI 7
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 225.0 PM2.5 45.7
SO2 16.1 PM10 68.5
O3 2.7
Sha Tin
Sha Tin AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 141.0 PM2.5 42.0
SO2 7.1 PM10 59.2
O3 3.2
Kwun Tong
Kwun Tong AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 109.4 PM2.5 38.1
SO2 5.6 PM10 63.2
O3 22.7
Eastern
Eastern AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 117.1 PM2.5 14.4
SO2 1.1 PM10 27.7
O3 11.1
Mong Kok
Mong Kok AQHI 6
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 159.9 PM2.5 49.0
SO2 2.8 PM10 71.4
O3 10.2
Tuen Mun
Tuen Mun AQHI 7
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 186.1 PM2.5 86.0
SO2 22.1 PM10 129.0
O3 5.6
General Station
Roadside Station
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 quality control check, the monitoring of PM10 and PM2.5 at the Yuen Long monitoring station will be temporarily suspended in the period between 30 March to 2 April 2015. We apologize for any inconvenience caused. 

FORECAST of Health Risk
27-03-2015
Tomorrow A.M.
Tomorrow P.M.
General Stations Moderate Moderate to High
Roadside Stations Moderate Moderate to High
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
20:00 27-03-2015 AQHI Health Risk
General Stations Central/Western 5Link to past 24 hrs AQHI trend Moderate
Eastern 4Link to past 24 hrs AQHI trend Moderate
Kwun Tong 5Link to past 24 hrs AQHI trend Moderate
Sham Shui Po 5Link to past 24 hrs AQHI trend Moderate
Kwai Chung 5Link to past 24 hrs AQHI trend Moderate
Tsuen Wan 7Link to past 24 hrs AQHI trend High
Yuen Long 6Link to past 24 hrs AQHI trend Moderate
Tuen Mun 7Link to past 24 hrs AQHI trend High
Tung Chung 6Link to past 24 hrs AQHI trend Moderate
Tai Po 5Link to past 24 hrs AQHI trend Moderate
Sha Tin 5Link to past 24 hrs AQHI trend Moderate
Tap Mun 4Link to past 24 hrs AQHI trend Moderate
Roadside Stations Causeway Bay 6Link to past 24 hrs AQHI trend Moderate
Central 7Link to past 24 hrs AQHI trend High
Mong Kok 6Link to past 24 hrs AQHI trend Moderate
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Last revision date:20:06 27-03-2015