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Past 24 Hours Pollutant Concentration Summary

Southern
Date TimeNO2O3SO2COPM10PM2.5
2021-09-18 07:0013.385.13.5546.621.114.7
2021-09-18 06:007.4103.43.6485.424.012.6
2021-09-18 05:006.3108.43.7497.133.617.9
2021-09-18 04:009.8126.64.3497.432.222.0
2021-09-18 03:007.3162.34.0530.425.317.7
2021-09-18 02:009.5153.04.4519.233.822.8
2021-09-18 01:0013.0144.44.3522.538.625.6
2021-09-18 00:0012.0147.34.2539.942.129.4
2021-09-17 23:0012.6129.94.0583.642.630.6
2021-09-17 22:0021.1129.34.4645.441.729.8
2021-09-17 21:0022.2102.24.9627.043.832.7
2021-09-17 20:0034.998.15.4653.043.129.3
2021-09-17 19:0073.6130.07.2695.043.227.0
2021-09-17 18:0048.8173.46.0689.744.030.0
2021-09-17 17:0032.7188.25.4645.048.435.0
2021-09-17 16:0019.6229.76.0631.946.030.8
2021-09-17 15:0027.8236.46.3605.836.319.1
2021-09-17 14:0036.4218.96.4617.425.515.3
2021-09-17 13:0035.4174.58.5597.627.314.6
2021-09-17 12:0071.066.011.7636.034.617.5
2021-09-17 11:0073.140.811.7672.632.415.6
2021-09-17 10:0073.929.210.7662.435.416.9
2021-09-17 09:0085.312.510.0763.931.119.4
2021-09-17 08:0071.65.08.5775.518.9-
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.