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Past 24 Hours Pollutant Concentration Summary

Causeway Bay
Date TimeNO2O3SO2COPM10PM2.5
2021-10-16 16:00111.310.77.1819.146.128.7
2021-10-16 15:00119.311.38.4750.240.525.5
2021-10-16 14:00105.414.36.0608.048.031.7
2021-10-16 13:0097.019.35.1632.639.424.0
2021-10-16 12:0095.817.15.7708.647.430.5
2021-10-16 11:0082.911.25.4764.144.530.4
2021-10-16 10:0066.49.65.6887.635.822.3
2021-10-16 09:0068.17.95.5656.131.221.4
2021-10-16 08:0060.68.83.8604.025.515.1
2021-10-16 07:0037.518.62.5439.721.511.4
2021-10-16 06:0032.924.12.3709.425.214.8
2021-10-16 05:0040.520.22.8847.225.814.7
2021-10-16 04:0038.521.52.7510.719.510.3
2021-10-16 03:0036.223.42.5762.817.48.2
2021-10-16 02:0040.121.03.1516.418.99.8
2021-10-16 01:0058.09.24.2616.625.516.0
2021-10-16 00:0063.47.24.9527.722.714.9
2021-10-15 23:0080.26.07.6739.628.821.2
2021-10-15 22:0060.77.46.7823.736.229.5
2021-10-15 21:0065.48.65.7739.032.725.6
2021-10-15 20:0058.810.45.0831.030.324.2
2021-10-15 19:0061.211.35.2752.616.110.2
2021-10-15 18:0060.09.06.3685.123.316.1
2021-10-15 17:0058.69.54.1725.218.211.0
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.