Welcome to Environmental Protection Department Air Quality Health Index Website


North
Date TimeNO2O3SO2COPM10PM2.5
2022-01-23 02:0014.063.52.8206.19.45.0
2022-01-23 01:0018.160.82.6161.15.25.2
2022-01-23 00:0016.464.52.4129.03.6-
2022-01-22 23:0018.162.92.6193.15.84.4
2022-01-22 22:0021.061.02.5224.65.52.8
2022-01-22 21:0020.460.42.7211.86.2-
2022-01-22 20:0029.051.92.7188.35.0-
2022-01-22 19:0032.749.02.6192.19.83.3
2022-01-22 18:0044.843.72.8263.414.96.9
2022-01-22 17:0049.336.42.9296.413.76.1
2022-01-22 16:0049.735.62.9269.910.87.1
2022-01-22 15:0045.038.73.0191.65.85.8
2022-01-22 14:0038.640.82.8239.55.83.7
2022-01-22 13:0038.237.43.0251.37.25.5
2022-01-22 12:0038.033.52.8240.35.4-
2022-01-22 11:0050.720.83.2373.92.1-
2022-01-22 10:0046.122.72.8312.13.0-
2022-01-22 09:0047.622.83.0324.95.3-
2022-01-22 08:0046.920.32.8320.19.46.1
2022-01-22 07:0032.039.02.5272.814.510.0
2022-01-22 06:0024.048.52.4239.812.411.7
2022-01-22 05:0014.658.62.4204.412.0-
2022-01-22 04:0013.564.22.5222.210.89.1
2022-01-22 03:0014.267.12.5205.113.08.4
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 23-01-2022