Central/Western
Date TimeNO2O3SO2COPM10PM2.5
2021-06-20 04:009.954.85.8-17.57.7
2021-06-20 03:0012.354.15.7-16.57.4
2021-06-20 02:0010.860.15.7-16.17.0
2021-06-20 01:0011.654.75.6-17.68.7
2021-06-20 00:0014.248.45.3-18.39.4
2021-06-19 23:0013.250.65.3-18.79.7
2021-06-19 22:0015.147.55.3-18.69.4
2021-06-19 21:0013.451.25.5-19.39.4
2021-06-19 20:0013.653.25.4-19.310.2
2021-06-19 19:0015.853.45.5-19.410.0
2021-06-19 18:0019.954.45.6-18.38.6
2021-06-19 17:0016.259.75.7-19.49.1
2021-06-19 16:0014.767.95.7-19.610.4
2021-06-19 15:0016.464.15.8-17.99.4
2021-06-19 14:0012.567.95.9-18.110.1
2021-06-19 13:0013.069.75.8-19.510.7
2021-06-19 12:0011.374.16.3-16.27.3
2021-06-19 11:0016.965.56.9-16.47.9
2021-06-19 10:0012.064.86.0-15.47.4
2021-06-19 09:0013.258.95.9-15.67.0
2021-06-19 08:0017.247.15.7-16.98.2
2021-06-19 07:0010.551.85.7-18.99.4
2021-06-19 06:007.653.85.8-17.99.1
2021-06-19 05:009.253.86.5-17.39.5
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.

Last revision date: 04:07 20-06-2021