Welcome to Environmental Protection Department Air Quality Health Index Website


Central/Western
Date TimeNO2O3SO2COPM10PM2.5
2022-01-19 09:0050.119.82.7-22.016.1
2022-01-19 08:0047.714.12.5-20.015.4
2022-01-19 07:0035.426.12.3-16.713.9
2022-01-19 06:0028.733.43.1-20.115.6
2022-01-19 05:0043.620.83.3-23.516.4
2022-01-19 04:0045.720.93.6-28.619.9
2022-01-19 03:0048.420.74.1-30.719.8
2022-01-19 02:00-17.7--34.521.3
2022-01-19 01:0059.615.43.3-36.522.9
2022-01-19 00:0065.114.83.3-38.224.4
2022-01-18 23:0066.314.83.3-40.325.1
2022-01-18 22:0068.114.93.2-45.129.5
2022-01-18 21:0073.414.83.3-45.930.7
2022-01-18 20:0082.112.33.8-42.630.7
2022-01-18 19:0082.011.13.3-40.630.1
2022-01-18 18:0079.713.23.2-41.330.1
2022-01-18 17:0072.216.73.2-37.927.3
2022-01-18 16:0058.230.93.4-31.023.0
2022-01-18 15:0056.830.85.1-32.425.4
2022-01-18 14:0060.818.64.8-28.223.3
2022-01-18 13:0049.340.12.7-25.020.5
2022-01-18 12:0041.142.01.7-23.820.2
2022-01-18 11:0048.231.71.8-24.520.1
2022-01-18 10:0060.012.43.2-23.319.0
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: 09:07 19-01-2022