• Current AQHI [22:00 2023-03-20]
    General Stations: 3 to 5 ( Low to Moderate)
    Roadside Stations: 4 to 5 ( Moderate)
  • Forecast of Health Risk Maximums [22:00 2023-03-20]
    <Tomorrow A.M.> General Stations: Low Roadside Stations: Low
    <Tomorrow P.M.> General Stations: Moderate Roadside Stations: Moderate


  • Current AQHI [22:00 2023-03-20]
    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)
NO231.1PM2.514.7
SO23.7PM1030.0
O367.2
Kwai Chung
Kwai Chung AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO240.1PM2.519.9
SO25.9PM1035.3
O347.5
Sham Shui Po
Sham Shui Po AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO247.6PM2.522.7
SO20.9PM1053.9
O359.4
Tai Po
Tai Po AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO226.9PM2.519.8
SO21.3PM1039.8
O384.9
Tap Mun
Tap Mun AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO218.5PM2.515.7
SO23.9PM1034.1
O3101.0
Tsuen Wan
Tsuen Wan AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO241.5PM2.521.0
SO25.9PM1035.0
O349.6
Tung Chung
Tung Chung AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO23.5PM2.58.4
SO20.6PM1015.2
O369.1
Yuen Long
Yuen Long AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO250.3PM2.515.0
SO24.6PM1028.1
O339.2
Causeway Bay
Causeway Bay AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO284.6PM2.525.4
SO25.4PM1047.9
O320.1
Central
Central AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO269.5PM2.521.9
SO22.5PM1038.9
O338.8
Sha Tin
Sha Tin AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO231.2PM2.515.3
SO22.8PM1028.5
O370.0
Kwun Tong
Kwun Tong AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO243.2PM2.523.0
SO25.0PM1058.0
O363.4
Tseung Kwan O
Tseung Kwan O AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO211.9PM2.517.5
SO21.6PM1042.0
O3105.2
Eastern
Eastern AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO241.4PM2.519.8
SO21.0PM1043.2
O384.5
Mong Kok
Mong Kok AQHI 5
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO279.4PM2.528.7
SO22.6PM1052.3
O342.2
Tuen Mun
Tuen Mun AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO252.9PM2.519.9
SO23.3PM1045.0
O339.8
Southern
Southern AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO223.4PM2.511.4
SO25.4PM1026.2
O368.1
North
North AQHI 4
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO216.0PM2.516.6
SO21.1PM1024.0
O387.2
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 equipment or station suspension due to repair and maintenance, the data collection for calculation of AQHI at station will be affected, the data of similar stations will then be adopted. Such AQHI will be shown with an asterisk.

FORECAST of Health Risk
20-03-2023
Tomorrow A.M.
Tomorrow P.M.
General StationsLowLow to Moderate
Roadside StationsLowLow 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
22:00 20-03-2023AQHIHealth Risk
General StationsCentral/Western4Link to past 24 hrs AQHI trendModerate
Southern4Link to past 24 hrs AQHI trendModerate
Eastern5Link to past 24 hrs AQHI trendModerate
Kwun Tong4Link to past 24 hrs AQHI trendModerate
Sham Shui Po4Link to past 24 hrs AQHI trendModerate
Kwai Chung3Link to past 24 hrs AQHI trendLow
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 Chung3Link to past 24 hrs AQHI trendLow
Tai Po4Link to past 24 hrs AQHI trendModerate
Sha Tin4Link to past 24 hrs AQHI trendModerate
North4Link to past 24 hrs AQHI trendModerate
Tap Mun4Link to past 24 hrs AQHI trendModerate
Roadside StationsCauseway Bay4Link to past 24 hrs AQHI trendModerate
Central4Link to past 24 hrs AQHI trendModerate
Mong Kok5Link to past 24 hrs AQHI trendModerate
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Last revision date: 22:07 20-03-2023