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Past 24 Hours Pollutant Concentration Summary

Kwai Chung
Date TimeNO2O3SO2COPM10PM2.5
2023-01-30 04:0037.248.84.2-31.120.1
2023-01-30 03:0015.676.44.3-29.819.0
2023-01-30 02:0019.376.94.3-26.417.0
2023-01-30 01:0048.748.74.3-26.616.5
2023-01-30 00:0058.938.14.2-33.721.0
2023-01-29 23:0075.823.64.6-38.723.8
2023-01-29 22:0064.439.44.6-42.425.6
2023-01-29 21:0080.126.85.7-46.028.0
2023-01-29 20:0090.924.06.2-46.725.7
2023-01-29 19:0075.348.97.5-48.125.5
2023-01-29 18:0068.463.87.9-47.725.8
2023-01-29 17:0051.280.07.8-50.027.8
2023-01-29 16:0043.488.18.8-50.929.9
2023-01-29 15:0031.793.56.9-46.425.5
2023-01-29 14:0037.483.86.3-43.723.0
2023-01-29 13:0053.660.98.1-42.923.9
2023-01-29 12:0035.372.14.6-44.426.0
2023-01-29 11:0027.274.64.7-46.327.5
2023-01-29 10:0021.976.74.3-40.621.1
2023-01-29 09:0027.671.14.4-43.823.6
2023-01-29 08:0044.359.34.6-47.425.3
2023-01-29 07:0030.770.84.4-46.824.4
2023-01-29 06:0017.984.74.2-45.221.9
2023-01-29 05:0016.787.54.3-48.324.1
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.