• Current AQHI [08:00 2021-01-19]
    General Stations: 3 to 5 ( Low to Moderate)
    Roadside Stations: 4 to 5 ( Moderate)
  • Forecast of Health Risk Maximums [08:00 2021-01-19]
    <Today A.M.> General Stations: Moderate Roadside Stations: Moderate
    <Today P.M.> General Stations: Moderate Roadside Stations: Moderate


  • Current AQHI [08:00 2021-01-19]
    General Stations: 3 to 5 ( Low to Moderate)
    Roadside Stations: 4 to 5 ( Moderate)
Central/Western
Central/Western AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO240.8PM2.523.1
SO20.6PM1052.7
O372.3
Kwai Chung
Kwai Chung AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO241.5PM2.520.9
SO26.2PM1056.3
O366.7
Sham Shui Po
Sham Shui Po AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO266.8PM2.520.8
SO22.3PM1058.7
O356.0
Tai Po
Tai Po AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO284.6PM2.529.5
SO26.4PM1049.2
O37.9
Tap Mun
Tap Mun AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO219.0PM2.522.2
SO26.1PM1048.6
O377.8
Tsuen Wan
Tsuen Wan AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO278.0PM2.525.7
SO22.7PM1048.6
O325.3
Tung Chung
Tung Chung AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO246.3PM2.523.4
SO22.1PM1043.8
O328.5
Yuen Long
Yuen Long AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO276.1PM2.530.1
SO27.8PM1057.0
O32.1
Causeway Bay
Causeway Bay AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO285.7PM2.530.0
SO26.6PM1068.0
O339.5
Central
Central AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO299.2PM2.532.6
SO25.3PM1064.4
O329.1
Sha Tin
Sha Tin AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO294.8PM2.520.5
SO21.9PM1057.8
O35.6
Kwun Tong
Kwun Tong AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO247.8PM2.531.0
SO24.9PM1070.7
O369.7
Tseung Kwan O
Tseung Kwan O AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO242.3PM2.516.1
SO22.8PM1043.7
O372.5
Eastern
Eastern AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2-PM2.522.1
SO2-PM1061.2
O3-
Mong Kok
Mong Kok AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO284.0PM2.529.2
SO22.9PM1060.0
O338.4
Tuen Mun
Tuen Mun AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO289.5PM2.536.0
SO24.0PM1075.0
O319.0
Southern
Southern AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO229.5PM2.518.0
SO23.6PM1052.5
O389.2
North
North AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2104.5PM2.523.2
SO26.5PM1048.6
O34.1
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 urgent repair and maintenance,  monitoring of NO2, O3 &  SO2 at Eastern general air quality monitoring station have been temporarily suspended until further notice. We apologize for any inconvenience caused.

FORECAST of Health Risk
19-01-2021
Today A.M.
Today 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
08:00 19-01-2021AQHIHealth Risk
General StationsCentral/Western4Link to past 24 hrs AQHI trendModerate
Southern5Link to past 24 hrs AQHI trendModerate
Eastern4Link to past 24 hrs AQHI trendModerate
Kwun Tong5Link to past 24 hrs AQHI trendModerate
Sham Shui Po5Link to past 24 hrs AQHI trendModerate
Kwai Chung4Link to past 24 hrs AQHI trendModerate
Tsuen Wan4Link to past 24 hrs AQHI trendModerate
Tseung Kwan O4Link to past 24 hrs AQHI trendModerate
Yuen Long3Link to past 24 hrs AQHI trendLow
Tuen Mun4Link to past 24 hrs AQHI trendModerate
Tung Chung4Link to past 24 hrs AQHI trendModerate
Tai Po4Link to past 24 hrs AQHI trendModerate
Sha Tin3Link to past 24 hrs AQHI trendLow
North4Link to past 24 hrs AQHI trendModerate
Tap Mun4Link to past 24 hrs AQHI trendModerate
Roadside StationsCauseway Bay5Link to past 24 hrs AQHI trendModerate
Central5Link to past 24 hrs AQHI trendModerate
Mong Kok4Link to past 24 hrs AQHI trendModerate
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Last revision date: 08:07 19-01-2021