Welcome to Environmental Protection Department Air Quality Health Index Website


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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.

FORECAST of Health Risk
03-05-2024
Today P.M.
Tomorrow A.M.
General StationsModerateLow to Moderate
Roadside StationsModerateLow to Moderate
Health RiskLowModerateHighVery HighSerious
AQHI Scale1234567891010+
Air Quality Health Index
15:00 03-05-2024AQHIHealth Risk
General StationsCentral/Western5Link to past 24 hrs AQHI trendModerate
Southern5Link to past 24 hrs AQHI trendModerate
Eastern5Link to past 24 hrs AQHI trendModerate
Kwun Tong5Link to past 24 hrs AQHI trendModerate
Sham Shui Po5Link to past 24 hrs AQHI trendModerate
Kwai Chung5*Link to past 24 hrs AQHI trendModerate
Tsuen Wan5Link to past 24 hrs AQHI trendModerate
Tseung Kwan O5*Link to past 24 hrs AQHI trendModerate
Yuen Long4Link to past 24 hrs AQHI trendModerate
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 Tin5Link to past 24 hrs AQHI trendModerate
North4Link to past 24 hrs AQHI trendModerate
Tap Mun5Link to past 24 hrs AQHI trendModerate
Roadside StationsCauseway Bay5Link to past 24 hrs AQHI trendModerate
Central5Link to past 24 hrs AQHI trendModerate
Mong Kok5Link to past 24 hrs AQHI trendModerate


Last revision date: 15:07 03-05-2024