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Past 24 Hours Pollutant Concentration Summary

Kwai Chung
Date TimeNO2O3SO2COPM10PM2.5
2024-05-21 13:0060.623.72.4-10.98.9
2024-05-21 12:0060.523.72.5-9.37.4
2024-05-21 11:0066.318.92.7-12.78.9
2024-05-21 10:0068.518.02.8-13.79.6
2024-05-21 09:0054.924.93.1-9.66.2
2024-05-21 08:0053.923.22.7-9.66.8
2024-05-21 07:0048.028.82.6-10.98.0
2024-05-21 06:0031.239.82.1-4.22.5
2024-05-21 05:0017.651.82.4-4.13.1
2024-05-21 04:00----4.02.6
2024-05-21 03:0018.856.01.4-2.42.3
2024-05-21 02:0015.561.51.3-0.4-
2024-05-21 01:0023.156.51.6-0.8-
2024-05-21 00:0024.356.71.6-2.9-
2024-05-20 23:0037.948.41.7-4.0-
2024-05-20 22:0043.947.01.6-4.74.7
2024-05-20 21:0044.043.12.1-9.48.6
2024-05-20 20:0043.243.02.6-10.69.2
2024-05-20 19:0043.649.23.8-11.310.1
2024-05-20 18:00----8.96.0
2024-05-20 17:00----10.26.7
2024-05-20 16:00----11.78.8
2024-05-20 15:0047.3-2.2-9.37.1
2024-05-20 14:0040.853.52.1-9.68.7
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.