• Current AQHI [05:00 2024-05-28]
    General Stations: 2 to 3 ( Low)
    Roadside Stations: 2 ( Low)
  • Forecast of Health Risk Maximums [05:00 2024-05-28]
    <Today A.M.> General Stations: Low Roadside Stations: Low
    <Today P.M.> General Stations: Moderate Roadside Stations: Moderate


  • Current AQHI [05:00 2024-05-28]
    General Stations: 2 to 3 ( Low)
    Roadside Stations: 2 ( Low)
Central/Western
Central/Western AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO222.8PM2.54.6
SO22.5PM107.0
O336.7
Kwai Chung
Kwai Chung AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO265.8PM2.57.4
SO24.2PM1010.8
O35.1
Sham Shui Po
Sham Shui Po AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO266.9PM2.55.1
SO25.6PM108.5
O36.7
Tai Po
Tai Po AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO216.9PM2.53.8
SO21.4PM107.3
O333.8
Tap Mun
Tap Mun AQHI 3
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO22.9PM2.5-
SO22.4PM101.2
O356.8
Tsuen Wan
Tsuen Wan AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO262.2PM2.56.2
SO24.1PM109.7
O32.3
Tung Chung
Tung Chung AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO242.9PM2.510.9
SO20.9PM1013.0
O38.9
Yuen Long
Yuen Long AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO229.0PM2.57.7
SO22.1PM1011.4
O321.9
Causeway Bay
Causeway Bay AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2-PM2.59.4
SO2-PM1012.3
O312.9
Central
Central AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO266.2PM2.55.6
SO22.5PM109.1
O36.5
Sha Tin
Sha Tin AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO243.4PM2.53.3
SO21.4PM103.9
O312.3
Kwun Tong
Kwun Tong AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO242.7PM2.54.8
SO20.9PM107.5
O316.8
Tseung Kwan O
Tseung Kwan O AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO233.6PM2.53.8
SO23.2PM1017.7
O324.3
Eastern
Eastern AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO2-PM2.56.6
SO2-PM1011.4
O3-
Mong Kok
Mong Kok AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO258.3PM2.5-
SO22.9PM10-
O38.7
Tuen Mun
Tuen Mun AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO231.6PM2.57.9
SO23.4PM1017.8
O317.2
Southern
Southern AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO232.4PM2.56.1
SO23.7PM1018.9
O317.1
North
North AQHI 2
Past 24 hrsConcentration / AQHI
Hourly concentration (ug/m3)
NO222.8PM2.58.0
SO25.9PM1010.8
O329.2
General Station
Roadside Station
Suspended
Remarks:

(1) Time shown is in Hong Kong time.

(2) Concentration shown is in microgram per cubic metre (µg/m3).

(3) Abbreviation:
NO2 - nitrogen dioxide, O3 - ozone,
SO2 - sulphur dioxide, CO - carbon monoxide,
PM10 - respirable suspended particulates,
PM2.5 - fine suspended particulates

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

(5) 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.

(6) Owing to maintenance works, the operation of Eastern Air Quality Monitoring Station will be temporarily suspended.  We apologize for any inconvenience caused.

FORECAST of Health Risk
28-05-2024
Today A.M.
Today 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+]
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Last revision date: 05:07 28-05-2024