Welcome to Environmental Protection Department Air Quality Health Index Website


North
Date TimeNO2O3SO2COPM10PM2.5
2023-05-28 17:0010.6106.72.3243.018.814.0
2023-05-28 16:008.7100.32.0236.319.312.0
2023-05-28 15:008.788.22.0226.020.09.7
2023-05-28 14:0011.579.42.0308.717.97.2
2023-05-28 13:009.576.51.9225.118.98.7
2023-05-28 12:0010.578.02.2274.422.112.6
2023-05-28 11:0013.171.02.0283.523.715.0
2023-05-28 10:0015.462.21.9283.821.112.5
2023-05-28 09:0011.758.71.7271.018.510.7
2023-05-28 08:0010.255.51.6262.317.913.6
2023-05-28 07:0011.452.11.8250.115.010.4
2023-05-28 06:0011.056.11.6245.713.96.3
2023-05-28 05:007.258.01.9237.714.26.9
2023-05-28 04:007.853.92.4300.015.710.0
2023-05-28 03:007.957.62.0229.417.812.1
2023-05-28 02:006.958.11.8241.719.912.5
2023-05-28 01:007.355.81.9232.221.113.6
2023-05-28 00:0013.946.52.0240.721.512.7
2023-05-27 23:0012.654.91.8367.823.516.6
2023-05-27 22:0011.865.81.7344.725.516.6
2023-05-27 21:0013.566.71.8328.423.813.4
2023-05-27 20:0019.458.51.8311.320.211.0
2023-05-27 19:0020.659.41.8355.118.89.1
2023-05-27 18:0017.466.01.9276.619.010.0
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: 17:07 28-05-2023