HIGHLIGHTS
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Current AQHI: General Stations 4 to 6Roadside Stations 5 to 6
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)
NO252.3PM2.538.7
SO24.8PM1054.0
O374.3
Kwai Chung
Kwai Chung AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO264.0PM2.531.6
SO24.5PM1041.3
O372.3
Sham Shui Po
Sham Shui Po AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO262.2PM2.539.0
SO25.1PM1046.6
O354.2
Tai Po
Tai Po AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO235.6PM2.534.4
SO22.6PM1048.7
O3102.6
Tap Mun
Tap Mun AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO211.4PM2.529.8
SO27.6PM1047.4
O3107.7
Tsuen Wan
Tsuen Wan AQHI 6
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO252.0PM2.544.9
SO212.0PM1057.6
O392.5
Tung Chung
Tung Chung AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO273.8PM2.539.9
SO29.3PM1057.1
O341.3
Yuen Long
Yuen Long AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO256.8PM2.545.4
SO29.0PM1071.7
O368.7
Causeway Bay
Causeway Bay AQHI 6
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2125.2PM2.547.9
SO27.4PM1065.8
O320.2
Central
Central AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO287.7PM2.537.0
SO25.5PM1050.5
O350.3
Sha Tin
Sha Tin AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO250.6PM2.534.0
SO27.0PM1052.9
O383.0
Kwun Tong
Kwun Tong AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO232.5PM2.537.0
SO24.9PM1053.0
O392.3
Tseung Kwan O
Tseung Kwan O AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO217.5PM2.5-
SO23.8PM10-
O3111.6
Eastern
Eastern AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO247.3PM2.534.1
SO24.1PM1044.4
O388.8
Mong Kok
Mong Kok AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO285.0PM2.546.9
SO24.1PM1062.0
O351.3
Tuen Mun
Tuen Mun AQHI 6
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2143.0PM2.553.9
SO212.9PM1080.9
O34.0
General Station
Roadside Station
Suspended
Remarks:

(1) Time shown is in Hong Kong time.

(2) The AQHI information is based on real time data taken directly from EPD's Air Quality Monitoring Network.

(3) 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 the Annual Air Quality Index(Annual AQI).

(4) 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 most similar stations will then be adopted. Such AQHI will be shown in italics.

(5) Owing to quality assurance checking, monitoring of RSP (PM10)  and FSP (PM2.5) at Tseung Kwan O general air quality monitoring station is temporarily suspended from 17 to 19 January 2018. We apologize for any inconvenience caused.

FORECAST of Health Risk
18-01-2018
Tomorrow A.M.
Tomorrow P.M.
General StationsLow to ModerateLow to Moderate
Roadside StationsLow to ModerateLow 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
21:00 18-01-2018AQHIHealth Risk
General StationsCentral/Western5Link to past 24 hrs AQHI trendModerate
Eastern5Link to past 24 hrs AQHI trendModerate
Kwun Tong5Link to past 24 hrs AQHI trendModerate
Sham Shui Po4Link to past 24 hrs AQHI trendModerate
Kwai Chung5Link to past 24 hrs AQHI trendModerate
Tsuen Wan6Link to past 24 hrs AQHI trendModerate
Tseung Kwan O5Link to past 24 hrs AQHI trendModerate
Yuen Long5Link to past 24 hrs AQHI trendModerate
Tuen Mun6Link to past 24 hrs AQHI trendModerate
Tung Chung5Link to past 24 hrs AQHI trendModerate
Tai Po5Link to past 24 hrs AQHI trendModerate
Sha Tin5Link to past 24 hrs AQHI trendModerate
Tap Mun5Link to past 24 hrs AQHI trendModerate
Roadside StationsCauseway Bay6Link to past 24 hrs AQHI trendModerate
Central5Link to past 24 hrs AQHI trendModerate
Mong Kok5Link to past 24 hrs AQHI trendModerate
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Last revision date:21:06 18-01-2018