HIGHLIGHTS
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Current AQHI: General Stations 3 to 4Roadside Stations 4 to 6
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 49.5 PM2.5 28.2
SO2 5.4 PM10 36.1
O3 26.3
Kwai Chung
Kwai Chung AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 54.4 PM2.5 24.6
SO2 8.7 PM10 27.3
O3 51.7
Sham Shui Po
Sham Shui Po AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 77.3 PM2.5 -
SO2 5.8 PM10 30.9
O3 20.0
Tai Po
Tai Po AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 55.0 PM2.5 31.6
SO2 0.4 PM10 40.3
O3 43.2
Tap Mun
Tap Mun AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 16.2 PM2.5 46.6
SO2 3.9 PM10 53.9
O3 54.7
Tsuen Wan
Tsuen Wan AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 76.9 PM2.5 22.0
SO2 9.9 PM10 27.1
O3 17.7
Tung Chung
Tung Chung AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 40.7 PM2.5 30.3
SO2 7.0 PM10 42.2
O3 49.4
Yuen Long
Yuen Long AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 52.4 PM2.5 -
SO2 4.5 PM10 61.6
O3 28.0
Causeway Bay
Causeway Bay AQHI 6
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 147.6 PM2.5 48.0
SO2 2.9 PM10 58.4
O3 6.9
Central
Central AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 125.3 PM2.5 30.3
SO2 7.6 PM10 39.8
O3 6.5
Sha Tin
Sha Tin AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 72.5 PM2.5 32.3
SO2 4.8 PM10 41.4
O3 17.9
Kwun Tong
Kwun Tong AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 63.3 PM2.5 18.9
SO2 2.5 PM10 36.7
O3 44.0
Eastern
Eastern AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 53.1 PM2.5 30.0
SO2 2.2 PM10 34.2
O3 44.5
Mong Kok
Mong Kok AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 103.0 PM2.5 39.1
SO2 5.1 PM10 48.0
O3 10.6
Tuen Mun
Tuen Mun AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 - PM2.5 -
SO2 - PM10 -
O3 -
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 the maintenance work on the roof of the building where the Tuen Mun monitoring station is located, the operation of  the Tuen Mun station will be temporarily suspended from 1 November 2014 for a few months. We apologize for any inconvenience caused.

FORECAST of Health Risk
19-12-2014
Tomorrow A.M.
Tomorrow P.M.
General Stations Low to Moderate Moderate to High
Roadside Stations Moderate Moderate to Very 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
23:00 19-12-2014 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 4Link to past 24 hrs AQHI trend Moderate
Sham Shui Po 3Link to past 24 hrs AQHI trend Low
Kwai Chung 4Link to past 24 hrs AQHI trend Moderate
Tsuen Wan 3Link to past 24 hrs AQHI trend Low
Yuen Long 4Link to past 24 hrs AQHI trend Moderate
Tuen Mun 4Link to past 24 hrs AQHI trend Moderate
Tung Chung 3Link to past 24 hrs AQHI trend Low
Tai Po 4Link to past 24 hrs AQHI trend Moderate
Sha Tin 3Link to past 24 hrs AQHI trend Low
Tap Mun 3Link to past 24 hrs AQHI trend Low
Roadside Stations Causeway Bay 6Link to past 24 hrs AQHI trend Moderate
Central 5Link to past 24 hrs AQHI trend Moderate
Mong Kok 4Link to past 24 hrs AQHI trend Moderate
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Last revision date:23:06 19-12-2014