Welcome to Environmental Protection Department Air Quality Health Index Website


Southern
Date TimeNO2O3SO2COPM10PM2.5
2023-03-20 23:0017.666.35.2215.630.37.1
2023-03-20 22:0023.468.15.4230.426.211.4
2023-03-20 21:0021.975.05.4229.527.015.2
2023-03-20 20:0018.281.35.4256.437.812.6
2023-03-20 19:0016.285.75.3229.532.76.6
2023-03-20 18:0013.990.95.0244.128.49.6
2023-03-20 17:0015.190.95.3226.834.316.2
2023-03-20 16:0010.797.35.3213.338.721.6
2023-03-20 15:0012.897.25.1233.637.024.6
2023-03-20 14:0014.598.54.6216.230.020.9
2023-03-20 13:0017.895.15.1240.527.917.1
2023-03-20 12:0024.184.65.1251.831.115.1
2023-03-20 11:0023.480.45.1247.529.912.5
2023-03-20 10:0025.775.45.1256.822.111.3
2023-03-20 09:0027.472.04.9261.117.010.7
2023-03-20 08:0034.364.54.9279.617.811.9
2023-03-20 07:0035.962.35.0268.820.014.9
2023-03-20 06:0031.667.25.0242.415.911.6
2023-03-20 05:00-79.84.9228.311.26.7
2023-03-20 04:009.388.84.9246.213.85.3
2023-03-20 03:008.792.15.0227.910.65.0
2023-03-20 02:0012.488.74.9242.69.17.6
2023-03-20 01:0022.175.74.8265.417.210.1
2023-03-20 00:0022.077.04.8275.128.116.2
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.

Mobile Version | Desktop Version
Last revision date: 23:07 20-03-2023