Welcome to Environmental Protection Department Air Quality Health Index Website


Kwai Chung
Date TimeNO2O3SO2COPM10PM2.5
2024-04-29 16:0057.912.14.7-17.810.4
2024-04-29 15:0055.714.74.6-17.89.6
2024-04-29 14:0053.915.94.5-17.810.4
2024-04-29 13:0052.716.14.3-17.910.1
2024-04-29 12:0057.212.24.2-19.111.8
2024-04-29 11:0057.211.93.4-21.913.1
2024-04-29 10:0055.711.42.7-18.39.7
2024-04-29 09:0044.317.32.2-15.97.4
2024-04-29 08:0040.622.11.5-15.87.7
2024-04-29 07:0032.030.61.4-17.07.8
2024-04-29 06:0012.748.50.7-14.86.2
2024-04-29 05:0015.347.81.0-14.06.4
2024-04-29 04:00----12.55.5
2024-04-29 03:007.758.10.8-11.73.4
2024-04-29 02:0010.858.30.6-16.16.8
2024-04-29 01:0017.360.70.7-14.36.0
2024-04-29 00:0023.061.10.7-13.46.2
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
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.

Last revision date: 16:07 29-04-2024