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North
Date TimeNO2O3SO2COPM10PM2.5
2021-01-22 23:0085.78.72.8631.751.234.9
2021-01-22 22:0093.48.33.1631.741.428.5
2021-01-22 21:0092.914.02.9589.639.122.3
2021-01-22 20:0079.427.52.8519.939.720.9
2021-01-22 19:0074.341.91.9474.540.224.6
2021-01-22 18:0076.751.42.5484.741.626.0
2021-01-22 17:0064.590.62.1459.140.326.1
2021-01-22 16:0053.4120.51.8473.047.229.8
2021-01-22 15:0047.8120.42.2477.367.144.7
2021-01-22 14:0065.0113.84.0559.790.059.3
2021-01-22 13:0082.8-6.2658.490.963.4
2021-01-22 12:00----78.555.8
2021-01-22 11:00----72.845.3
2021-01-22 10:0095.419.510.3710.969.238.2
2021-01-22 09:0092.35.69.5763.975.945.1
2021-01-22 08:0095.9-7.5830.683.658.1
2021-01-22 07:0094.7-7.31,156.880.062.9
2021-01-22 06:0092.2-5.7933.988.367.1
2021-01-22 05:00100.9-6.31,470.2110.876.9
2021-01-22 04:0096.7-5.2946.3120.491.1
2021-01-22 03:00101.00.55.41,002.8111.688.5
2021-01-22 02:00108.13.25.1964.794.876.6
2021-01-22 01:0090.34.03.9929.479.167.2
2021-01-22 00:00106.54.44.7984.469.051.1
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: 23:07 22-01-2021