HIGHLIGHTS
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Current AQHI: General Stations 2 to 3Roadside Stations 2 to 3
Forecast of Health Risk Maximums:
General Stations: Moderate
Roadside Stations: Moderate
Central/Western
Central/Western AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 45.0 PM2.5 17.6
SO2 13.2 PM10 30.9
O3 2.7
Kwai Chung
Kwai Chung AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 71.7 PM2.5 14.8
SO2 32.3 PM10 19.1
O3 15.1
Sham Shui Po
Sham Shui Po AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 45.7 PM2.5 16.0
SO2 13.2 PM10 27.4
O3 9.8
Tai Po
Tai Po AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 11.5 PM2.5 4.6
SO2 2.5 PM10 9.4
O3 37.3
Tap Mun
Tap Mun AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 7.2 PM2.5 8.9
SO2 11.3 PM10 15.5
O3 34.1
Tsuen Wan
Tsuen Wan AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 55.6 PM2.5 20.3
SO2 11.4 PM10 30.4
O3 5.8
Tung Chung
Tung Chung AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 23.8 PM2.5 8.0
SO2 6.0 PM10 15.7
O3 11.5
Yuen Long
Yuen Long AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 23.1 PM2.5 13.0
SO2 4.8 PM10 19.3
O3 16.3
Causeway Bay
Causeway Bay AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 66.7 PM2.5 31.3
SO2 8.3 PM10 56.1
O3 3.4
Central
Central AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 83.8 PM2.5 11.0
SO2 7.4 PM10 15.3
O3 3.2
Sha Tin
Sha Tin AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 24.9 PM2.5 0.8
SO2 4.5 PM10 1.1
O3 19.7
Kwun Tong
Kwun Tong AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 33.3 PM2.5 10.6
SO2 5.8 PM10 19.4
O3 17.1
Eastern
Eastern AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 26.0 PM2.5 5.7
SO2 1.1 PM10 10.7
O3 21.3
Mong Kok
Mong Kok AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 54.7 PM2.5 16.0
SO2 2.1 PM10 23.6
O3 5.6
Tuen Mun
Tuen Mun AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 26.1 PM2.5 -
SO2 8.3 PM10 -
O3 15.8
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) The gaseous pollutants monitoring at the Causeway Bay Air Quality Monitoring Station will be suspended intermittently from August to October 2015 because of renovation at the building where the gas sampler in-take locates. We apologize for any inconvenience caused.


FORECAST of Health Risk
04-09-2015
Today P.M.
Tomorrow A.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
11:00 04-09-2015 AQHI Health Risk
General Stations Central/Western 2Link to past 24 hrs AQHI trend Low
Eastern 2Link to past 24 hrs AQHI trend Low
Kwun Tong 2Link to past 24 hrs AQHI trend Low
Sham Shui Po 2Link to past 24 hrs AQHI trend Low
Kwai Chung 3Link to past 24 hrs AQHI trend Low
Tsuen Wan 2Link to past 24 hrs AQHI trend Low
Yuen Long 2Link to past 24 hrs AQHI trend Low
Tuen Mun 2Link to past 24 hrs AQHI trend Low
Tung Chung 2Link to past 24 hrs AQHI trend Low
Tai Po 2Link to past 24 hrs AQHI trend Low
Sha Tin 2Link to past 24 hrs AQHI trend Low
Tap Mun 2Link to past 24 hrs AQHI trend Low
Roadside Stations Causeway Bay 3Link to past 24 hrs AQHI trend Low
Central 3Link to past 24 hrs AQHI trend Low
Mong Kok 2Link to past 24 hrs AQHI trend Low
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Last revision date:11:06 04-09-2015