Welcome to Environmental Protection Department Air Quality Health Index Website


Eastern
Date TimeNO2O3SO2COPM10PM2.5
2023-05-30 02:0044.949.34.4-30.217.7
2023-05-30 01:0049.750.34.0-31.719.6
2023-05-30 00:0042.365.63.3-32.920.6
2023-05-29 23:0045.777.93.0-30.618.3
2023-05-29 22:0029.4104.43.3-30.219.6
2023-05-29 21:0026.4109.42.9-30.220.3
2023-05-29 20:0032.1109.53.4-28.718.0
2023-05-29 19:0032.1127.72.6-28.116.9
2023-05-29 18:0027.3126.42.9-29.016.1
2023-05-29 17:0034.6146.23.0-30.917.3
2023-05-29 16:0045.5136.52.8-27.715.1
2023-05-29 15:0044.4107.64.0-28.314.2
2023-05-29 14:0039.3103.23.8-32.418.6
2023-05-29 13:0044.494.93.2-32.518.5
2023-05-29 12:00----35.018.8
2023-05-29 11:00----32.316.0
2023-05-29 10:0031.083.01.4-24.611.7
2023-05-29 09:0036.878.81.2-24.713.8
2023-05-29 08:0030.375.81.4-24.513.0
2023-05-29 07:0023.164.61.4-21.68.7
2023-05-29 06:0015.969.81.9-23.19.7
2023-05-29 05:0012.775.62.1-25.712.5
2023-05-29 04:0013.778.01.9-22.08.9
2023-05-29 03:0014.988.22.0-21.88.9
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: 02:07 30-05-2023