Welcome to Environmental Protection Department Air Quality Health Index Website


Kwai Chung
Date TimeNO2O3SO2COPM10PM2.5
2024-04-28 23:0023.658.10.6-12.04.9
2024-04-28 22:0024.258.70.6-9.73.4
2024-04-28 21:0023.767.10.6-10.43.5
2024-04-28 20:0031.167.90.6-10.85.6
2024-04-28 19:0025.475.50.6-8.44.4
2024-04-28 18:0034.073.60.9-8.44.4
2024-04-28 17:0031.072.50.9-10.46.4
2024-04-28 16:0038.673.21.1-7.55.4
2024-04-28 15:0029.281.40.9-6.45.6
2024-04-28 14:0028.487.70.8-10.18.4
2024-04-28 13:0032.981.70.8-13.68.9
2024-04-28 12:0024.194.90.7-13.25.8
2024-04-28 11:0025.087.40.9-14.14.0
2024-04-28 10:0023.987.40.7-7.32.1
2024-04-28 09:0021.292.40.7-2.7-
2024-04-28 08:0028.376.10.8-5.41.9
2024-04-28 07:0017.182.71.1-10.25.0
2024-04-28 06:0013.950.31.6-19.18.5
2024-04-28 05:0023.425.32.1-17.78.0
2024-04-28 04:0021.427.21.8-18.88.9
2024-04-28 03:0017.728.31.6-21.08.4
2024-04-28 02:0017.326.41.6-19.26.8
2024-04-28 01:0026.319.02.0-19.47.8
2024-04-28 00:0030.514.22.0-18.16.1
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 pollutant concentration is based on real time data taken directly from EPD's Air Quality Monitoring Network.

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Last revision date: 23:07 28-04-2024