Eastern
Date TimeNO2O3SO2COPM10PM2.5
2021-09-22 19:0034.849.20.5-11.84.3
2021-09-22 18:0032.054.70.9-1.9-
2021-09-22 17:0024.265.10.8---
2021-09-22 16:0020.554.20.8-3.2-
2021-09-22 15:0017.758.90.5-11.54.7
2021-09-22 14:0017.063.30.9-13.25.5
2021-09-22 13:0021.359.70.6-8.64.4
2021-09-22 12:0020.256.20.9-5.11.9
2021-09-22 11:0020.243.01.1-2.61.4
2021-09-22 10:0021.435.81.7-5.02.8
2021-09-22 09:0019.432.61.0-8.35.9
2021-09-22 08:0020.029.01.0-7.96.3
2021-09-22 07:0019.529.60.7-6.52.2
2021-09-22 06:0019.029.30.8-4.70.0
2021-09-22 05:0023.729.31.0-3.40.3
2021-09-22 04:0019.536.91.0-3.02.7
2021-09-22 03:0017.134.51.1-4.62.9
2021-09-22 02:0022.532.60.8-7.43.3
2021-09-22 01:0028.732.51.2-7.53.4
2021-09-22 00:0032.133.01.5-6.82.6
2021-09-21 23:0021.448.01.1-9.04.1
2021-09-21 22:0027.850.71.2-9.44.3
2021-09-21 21:0028.450.30.9-8.97.4
2021-09-21 20:0035.447.61.1-8.65.8
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: 19:07 22-09-2021