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Past 24 Hours Pollutant Concentration Summary

Yuen Long
Date TimeNO2O3SO2COPM10PM2.5
2023-06-09 21:0038.330.74.5554.19.56.2
2023-06-09 20:0037.437.04.3501.38.45.5
2023-06-09 19:0036.442.64.3495.87.04.1
2023-06-09 18:0035.546.74.4503.77.85.2
2023-06-09 17:0034.554.54.6490.56.64.0
2023-06-09 16:0026.155.64.4480.05.93.2
2023-06-09 15:0026.751.74.7482.67.84.5
2023-06-09 14:0042.831.54.3487.36.54.6
2023-06-09 13:0021.6-4.3479.9--
2023-06-09 12:0018.4-4.1472.8--
2023-06-09 11:0027.234.74.2521.7--
2023-06-09 10:0032.123.64.3590.54.93.7
2023-06-09 09:0030.015.04.1668.45.44.2
2023-06-09 08:0029.611.82.8675.87.04.7
2023-06-09 07:0028.49.34.1579.08.72.3
2023-06-09 06:0021.813.04.0482.85.71.5
2023-06-09 05:0019.616.63.8525.75.02.5
2023-06-09 04:0021.017.64.1597.93.92.2
2023-06-09 03:0013.726.64.3491.16.23.7
2023-06-09 02:0023.512.54.4509.27.92.8
2023-06-09 01:00----10.45.1
2023-06-09 00:0032.80.04.3625.310.26.0
2023-06-08 23:0037.83.14.5560.67.54.6
2023-06-08 22:0039.39.04.4543.24.53.3
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.