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Yuen Long
Date TimeNO2O3SO2COPM10PM2.5
2023-09-26 02:0014.2-5.7591.012.27.6
2023-09-26 01:0015.550.85.8598.512.57.9
2023-09-26 00:0017.438.35.7600.114.29.0
2023-09-25 23:0018.441.95.6578.815.79.6
2023-09-25 22:0024.447.85.5627.418.712.6
2023-09-25 21:0023.945.85.8662.517.611.2
2023-09-25 20:0025.752.45.6678.520.313.5
2023-09-25 19:0028.748.05.6686.118.812.3
2023-09-25 18:0027.729.65.7636.916.410.4
2023-09-25 17:0022.730.05.3588.915.19.3
2023-09-25 16:0018.021.15.4600.916.110.4
2023-09-25 15:0017.624.34.9595.416.511.4
2023-09-25 14:0018.221.95.2587.214.09.4
2023-09-25 13:0017.721.65.6612.011.46.4
2023-09-25 12:0018.619.45.6634.910.75.4
2023-09-25 11:0018.715.35.8635.513.17.0
2023-09-25 10:0017.612.56.2595.313.67.4
2023-09-25 09:0017.39.56.4550.910.85.0
2023-09-25 08:0017.412.26.4564.812.86.5
2023-09-25 07:0021.313.36.1603.510.14.3
2023-09-25 06:0019.622.35.8600.38.93.3
2023-09-25 05:0011.629.36.1583.511.14.9
2023-09-25 04:0011.733.96.2568.011.75.5
2023-09-25 03:0012.030.27.9555.312.86.2
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.

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Last revision date: 02:07 26-09-2023