HIGHLIGHTS
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Current AQHI: General Stations 4 to 5Roadside Stations 4 to 6
Forecast of Health Risk Maximums:
General Stations: Moderate
Roadside Stations: Moderate
Central/Western
Central/Western AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 46.9 PM2.5 30.5
SO2 6.2 PM10 51.2
O3 55.9
Kwai Chung
Kwai Chung AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 61.4 PM2.5 26.2
SO2 7.2 PM10 41.9
O3 68.4
Sham Shui Po
Sham Shui Po AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 72.9 PM2.5 34.8
SO2 7.1 PM10 50.5
O3 43.5
Tai Po
Tai Po AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 45.6 PM2.5 28.7
SO2 0.9 PM10 46.8
O3 68.5
Tap Mun
Tap Mun AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 8.9 PM2.5 37.4
SO2 5.9 PM10 59.0
O3 113.4
Tsuen Wan
Tsuen Wan AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 48.2 PM2.5 33.8
SO2 8.9 PM10 49.0
O3 70.2
Tung Chung
Tung Chung AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 49.5 PM2.5 21.6
SO2 7.9 PM10 39.4
O3 53.2
Yuen Long
Yuen Long AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 73.4 PM2.5 31.1
SO2 6.0 PM10 64.2
O3 39.9
Causeway Bay
Causeway Bay AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 61.6 PM2.5 38.2
SO2 3.8 PM10 59.3
O3 47.0
Central
Central AQHI 6
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 136.3 PM2.5 31.8
SO2 5.1 PM10 49.1
O3 14.1
Sha Tin
Sha Tin AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 57.3 PM2.5 28.3
SO2 5.5 PM10 46.7
O3 54.6
Kwun Tong
Kwun Tong AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 34.2 PM2.5 34.5
SO2 9.4 PM10 49.5
O3 78.6
Eastern
Eastern AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 65.2 PM2.5 24.2
SO2 4.9 PM10 38.2
O3 48.8
Mong Kok
Mong Kok AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 95.3 PM2.5 36.4
SO2 2.0 PM10 55.7
O3 26.2
Tuen Mun
Tuen Mun AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 51.9 PM2.5 38.9
SO2 6.2 PM10 58.0
O3 59.6
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 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
30-10-2014
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
22:00 30-10-2014 AQHI Health Risk
General Stations Central/Western 4Link 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 5Link to past 24 hrs AQHI trend Moderate
Yuen Long 4Link to past 24 hrs AQHI trend Moderate
Tuen Mun 4Link to past 24 hrs AQHI trend Moderate
Tung Chung 4Link to past 24 hrs AQHI trend Moderate
Tai Po 4Link to past 24 hrs AQHI trend Moderate
Sha Tin 5Link to past 24 hrs AQHI trend Moderate
Tap Mun 5Link to past 24 hrs AQHI trend Moderate
Roadside Stations Causeway Bay 4Link to past 24 hrs AQHI trend Moderate
Central 6Link to past 24 hrs AQHI trend Moderate
Mong Kok 5Link to past 24 hrs AQHI trend Moderate
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Last revision date:22:07 30-10-2014