Past 24 Hours Pollutant Concentration Summary

Yuen Long
Date TimeNO2O3SO2COPM10PM2.5
2018-02-21 22:0021.153.35.4404.820.216.2
2018-02-21 21:0024.546.45.4419.331.719.2
2018-02-21 20:0032.740.35.4430.834.422.5
2018-02-21 19:0026.743.55.4377.935.124.5
2018-02-21 18:0031.340.95.4379.627.425.5
2018-02-21 17:0034.838.35.4393.724.424.2
2018-02-21 16:0031.742.15.4374.322.720.4
2018-02-21 15:0026.245.95.5344.028.325.0
2018-02-21 14:0026.644.15.6367.233.524.0
2018-02-21 13:0025.848.15.7388.027.4-
2018-02-21 12:0034.741.85.9395.127.821.8
2018-02-21 11:0037.038.56.1379.625.824.3
2018-02-21 10:0041.328.36.2410.622.2-
2018-02-21 09:0037.433.96.1391.029.618.2
2018-02-21 08:0039.631.85.8370.527.319.6
2018-02-21 07:0038.629.85.9321.820.518.2
2018-02-21 06:0019.247.56.3259.522.221.3
2018-02-21 05:0015.143.15.7268.727.626.5
2018-02-21 04:0017.040.07.8314.528.123.5
2018-02-21 03:00----28.1-
2018-02-21 02:0020.039.05.6332.932.7-
2018-02-21 01:0024.735.25.7349.929.6-
2018-02-21 00:0029.529.75.6399.931.327.5
2018-02-20 23:0038.526.95.9449.222.9-
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.

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Last revision date:22:05 21-02-2018