Welcome to Environmental Protection Department Air Quality Health Index Website


North
Date TimeNO2O3SO2COPM10PM2.5
2024-03-29 20:0045.0130.13.1607.247.830.0
2024-03-29 19:0056.9125.82.81,161.736.625.0
2024-03-29 18:0052.4127.13.3541.432.523.5
2024-03-29 17:0025.3122.73.0330.433.723.7
2024-03-29 16:0031.8133.93.5438.129.421.8
2024-03-29 15:0021.6153.82.4378.437.526.6
2024-03-29 14:0018.7143.63.1364.638.123.3
2024-03-29 13:0029.0107.92.9559.839.323.3
2024-03-29 12:0028.889.12.9387.047.922.1
2024-03-29 11:0047.054.93.3456.939.019.9
2024-03-29 10:0048.428.22.8494.434.123.2
2024-03-29 09:0039.523.02.3411.533.721.6
2024-03-29 08:0043.012.72.4514.124.318.8
2024-03-29 07:0041.49.22.2462.122.913.8
2024-03-29 06:0038.510.72.2384.823.513.0
2024-03-29 05:0039.38.92.4376.721.717.4
2024-03-29 04:0043.911.71.8445.729.115.8
2024-03-29 03:0045.020.41.3424.937.514.9
2024-03-29 02:0053.316.31.5405.336.117.9
2024-03-29 01:0060.510.21.5458.431.221.2
2024-03-29 00:0053.08.81.4492.030.913.0
2024-03-28 23:0065.811.61.2544.830.411.5
2024-03-28 22:0062.922.81.2412.926.415.4
2024-03-28 21:0043.750.51.6396.524.916.3
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: 20:07 29-03-2024