HIGHLIGHTS
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Current AQHI: General Stations 1 to 3Roadside Stations 2
Forecast of Health Risk Maximums:
General Stations: Moderate
Roadside Stations: Moderate
Central/Western
Central/Western AQHI 1
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 3.2 PM2.5 12.8
SO2 3.6 PM10 14.8
O3 23.9
Kwai Chung
Kwai Chung AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 31.0 PM2.5 13.6
SO2 8.1 PM10 19.2
O3 4.8
Sham Shui Po
Sham Shui Po AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 32.2 PM2.5 13.1
SO2 5.5 PM10 16.3
O3 1.3
Tai Po
Tai Po AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 22.0 PM2.5 11.6
SO2 1.3 PM10 16.6
O3 3.3
Tap Mun
Tap Mun AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 14.4 PM2.5 10.1
SO2 10.3 PM10 18.7
O3 29.7
Tsuen Wan
Tsuen Wan AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 47.8 PM2.5 13.1
SO2 22.1 PM10 21.6
O3 1.2
Tung Chung
Tung Chung AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 7.8 PM2.5 10.5
SO2 8.0 PM10 15.7
O3 31.2
Yuen Long
Yuen Long AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 29.2 PM2.5 7.0
SO2 17.2 PM10 10.7
O3 1.1
Causeway Bay
Causeway Bay AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 21.3 PM2.5 13.2
SO2 1.5 PM10 16.3
O3 10.8
Central
Central AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 28.6 PM2.5 8.1
SO2 5.8 PM10 11.1
O3 8.1
Sha Tin
Sha Tin AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 19.5 PM2.5 9.9
SO2 1.5 PM10 14.2
O3 12.1
Kwun Tong
Kwun Tong AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 29.0 PM2.5 -
SO2 8.5 PM10 9.0
O3 11.6
Tseung Kwan O
Tseung Kwan O AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 32.3 PM2.5 12.8
SO2 9.4 PM10 17.6
O3 8.3
Eastern
Eastern AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 16.4 PM2.5 -
SO2 5.7 PM10 15.2
O3 32.0
Mong Kok
Mong Kok AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 37.2 PM2.5 14.8
SO2 5.3 PM10 20.0
O3 0.1
Tuen Mun
Tuen Mun AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2 23.5 PM2.5 14.0
SO2 12.2 PM10 26.0
O3 11.0
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 system upgrading works, the reporting of air quality health index and its related information may be interrupted intermittently from now on till 31 May 2016. We apologize for any inconvenience caused.

FORECAST of Health Risk
05-05-2016
Today A.M.
Today P.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
02:00 05-05-2016 AQHI Health Risk
General Stations Central/Western 1Link 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 2Link to past 24 hrs AQHI trend Low
Tsuen Wan 3Link to past 24 hrs AQHI trend Low
Tseung Kwan O 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 2Link to past 24 hrs AQHI trend Low
Central 2Link to past 24 hrs AQHI trend Low
Mong Kok 2Link to past 24 hrs AQHI trend Low
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Last revision date:02:06 05-05-2016