Welcome to Environmental Protection Department Air Quality Health Index Website


North
Date TimeNO2O3SO2COPM10PM2.5
2023-12-04 17:0067.9162.66.2795.192.456.6
2023-12-04 16:0058.3165.04.8739.978.742.9
2023-12-04 15:0054.1128.54.1729.471.831.4
2023-12-04 14:0047.296.23.1698.359.727.2
2023-12-04 13:0037.586.53.3675.055.925.8
2023-12-04 12:0037.573.53.5679.746.824.0
2023-12-04 11:0035.854.33.8759.543.624.5
2023-12-04 10:0038.337.43.9744.541.225.9
2023-12-04 09:0050.122.24.1732.641.326.2
2023-12-04 08:0047.1-4.0751.749.630.6
2023-12-04 07:0041.324.66.4751.751.030.0
2023-12-04 06:0033.629.416.5767.453.731.6
2023-12-04 05:00-28.58.8722.555.233.3
2023-12-04 04:0045.419.93.4836.355.731.1
2023-12-04 03:0035.642.74.2793.460.930.9
2023-12-04 02:0033.964.84.3850.059.030.8
2023-12-04 01:0035.662.24.2876.153.232.5
2023-12-04 00:0024.887.24.3732.651.635.6
2023-12-03 23:0030.388.34.1750.453.034.6
2023-12-03 22:0034.091.24.1928.557.431.0
2023-12-03 21:0031.092.33.6766.056.932.0
2023-12-03 20:0034.198.53.6780.647.927.0
2023-12-03 19:0031.9109.33.5868.548.325.9
2023-12-03 18:0035.1111.13.5997.754.526.8
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