Causeway Bay
Date TimeNO2O3SO2COPM10PM2.5
2021-11-30 00:00133.5-8.7989.558.938.3
2021-11-29 23:00140.11.29.71,081.167.444.6
2021-11-29 22:00142.41.89.01,173.469.645.0
2021-11-29 21:00140.12.77.31,154.867.242.8
2021-11-29 20:00142.14.07.51,330.360.739.0
2021-11-29 19:00153.75.38.41,140.049.829.3
2021-11-29 18:00156.26.47.9955.367.641.4
2021-11-29 17:00151.35.19.5928.461.534.9
2021-11-29 16:00131.58.36.4828.854.930.4
2021-11-29 15:00131.07.28.4733.751.429.3
2021-11-29 14:00120.36.57.7659.944.927.6
2021-11-29 13:00106.15.76.5591.539.923.0
2021-11-29 12:00110.05.76.4540.845.623.0
2021-11-29 11:00109.53.58.9722.749.323.7
2021-11-29 10:00101.23.79.1840.443.323.7
2021-11-29 09:00110.04.410.3770.747.728.4
2021-11-29 08:00104.32.79.3950.940.224.3
2021-11-29 07:0079.19.35.7662.232.520.1
2021-11-29 06:0062.813.93.4428.139.325.9
2021-11-29 05:0054.424.33.0411.642.926.0
2021-11-29 04:0055.829.62.6370.240.221.6
2021-11-29 03:0066.226.62.6392.140.021.9
2021-11-29 02:0081.714.53.4486.843.824.4
2021-11-29 01:00102.611.64.6592.852.028.4
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.

Last revision date: 00:07 30-11-2021