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Date TimeNO2O3SO2COPM10PM2.5
2024-04-23 03:0047.35.32.6520.920.216.4
2024-04-23 02:0048.85.02.3474.720.518.2
2024-04-23 01:0057.58.02.3472.124.821.2
2024-04-23 00:0063.14.73.1643.326.623.3
2024-04-22 23:0065.35.03.4661.524.922.7
2024-04-22 22:0066.24.93.7676.126.622.9
2024-04-22 21:0074.45.23.2636.927.823.6
2024-04-22 20:0075.56.03.8939.619.917.4
2024-04-22 19:0077.27.13.1997.719.215.1
2024-04-22 18:0055.026.12.1508.222.318.9
2024-04-22 17:0068.817.72.8699.320.118.7
2024-04-22 16:0074.711.83.1665.717.213.5
2024-04-22 15:0067.69.02.8581.816.813.8
2024-04-22 14:0060.817.72.4533.428.521.1
2024-04-22 13:0056.942.62.2415.533.421.2
2024-04-22 12:0061.931.22.6507.222.216.5
2024-04-22 11:0057.830.22.6570.917.314.9
2024-04-22 10:0046.527.02.8387.420.218.1
2024-04-22 09:0052.714.23.2633.222.117.2
2024-04-22 08:0048.4-3.1653.921.214.7
2024-04-22 07:0045.47.65.5521.915.214.2
2024-04-22 06:0028.124.8-355.715.815.6
2024-04-22 05:00-18.77.6408.515.5-
2024-04-22 04:0043.410.32.2757.114.3-
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: 03:07 23-04-2024