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Past 24 Hours Pollutant Concentration Summary

Tsuen Wan
Date TimeNO2O3SO2COPM10PM2.5
2021-12-02 08:0056.534.96.3671.718.04.6
2021-12-02 07:0049.136.66.2608.027.113.4
2021-12-02 06:0027.354.46.5538.028.815.4
2021-12-02 05:0020.460.46.5527.925.413.4
2021-12-02 04:0021.157.36.1526.424.513.0
2021-12-02 03:0024.457.17.3535.923.29.8
2021-12-02 02:00----22.25.3
2021-12-02 01:00----26.89.2
2021-12-02 00:0036.362.76.3536.223.18.5
2021-12-01 23:0067.030.05.8678.935.018.2
2021-12-01 22:0041.956.86.0591.039.818.7
2021-12-01 21:0052.851.86.5655.134.314.7
2021-12-01 20:0078.336.45.9725.342.617.3
2021-12-01 19:0074.148.36.1698.043.414.1
2021-12-01 18:0068.859.45.9638.040.39.8
2021-12-01 17:0052.875.45.6546.235.38.4
2021-12-01 16:0041.682.15.1533.931.110.1
2021-12-01 15:0049.874.35.3577.634.817.7
2021-12-01 14:0047.673.15.0567.636.715.7
2021-12-01 13:0040.771.95.1541.630.26.7
2021-12-01 12:0043.261.25.5558.929.68.4
2021-12-01 11:0041.954.65.4565.823.58.8
2021-12-01 10:0044.648.66.1582.230.014.7
2021-12-01 09:0036.354.95.8574.630.514.2
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.