Welcome to Environmental Protection Department Air Quality Health Index Website


Kwai Chung
Date TimeNO2O3SO2COPM10PM2.5
2023-12-04 17:00126.8106.414.0-94.560.4
2023-12-04 16:00141.891.014.7-93.658.8
2023-12-04 15:00141.841.214.6-78.149.4
2023-12-04 14:00100.342.911.3-54.636.3
2023-12-04 13:00105.121.415.6-56.136.2
2023-12-04 12:00103.312.718.6-59.639.1
2023-12-04 11:0087.617.513.8-52.436.3
2023-12-04 10:0077.418.78.8-56.638.9
2023-12-04 09:0068.915.98.1-60.137.3
2023-12-04 08:0047.225.57.1-58.234.2
2023-12-04 07:0051.128.07.4-61.634.7
2023-12-04 06:0041.540.77.4-42.324.9
2023-12-04 05:0015.682.47.0-32.319.7
2023-12-04 04:0010.292.26.7-31.521.7
2023-12-04 03:0011.991.86.7-32.121.1
2023-12-04 02:0019.686.06.9-35.424.7
2023-12-04 01:0024.188.66.7-39.728.0
2023-12-04 00:0031.688.97.2-42.629.7
2023-12-03 23:0031.388.67.4-43.830.8
2023-12-03 22:0035.583.27.2-42.629.5
2023-12-03 21:0030.187.77.1-41.027.6
2023-12-03 20:0046.378.97.2-39.727.7
2023-12-03 19:0039.786.07.3-40.529.6
2023-12-03 18:0034.695.27.5-42.530.1
Remarks:

(1) Time shown is in Hong Kong time.

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

(3) Concentration shown is in µg/m3.

(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: 17:07 04-12-2023