Welcome to Environmental Protection Department Air Quality Health Index Website


Central/Western
Date TimeNO2O3SO2COPM10PM2.5
2023-12-05 22:0069.165.14.0-76.865.0
2023-12-05 21:0078.866.04.0-69.856.5
2023-12-05 20:0074.494.44.5-58.347.6
2023-12-05 19:0074.982.84.0-49.641.8
2023-12-05 18:0073.0103.44.4-48.239.8
2023-12-05 17:0064.5107.24.1-44.036.5
2023-12-05 16:0068.8105.83.7-45.137.3
2023-12-05 15:0058.695.93.2-46.737.0
2023-12-05 14:0071.869.03.8-48.637.3
2023-12-05 13:0085.643.84.6-52.339.4
2023-12-05 12:0079.633.16.2-59.642.4
2023-12-05 11:0077.319.56.9-55.139.4
2023-12-05 10:0065.214.25.6-49.937.0
2023-12-05 09:0055.610.74.4-48.034.8
2023-12-05 08:0050.48.54.0-48.235.9
2023-12-05 07:0051.37.53.4-48.836.4
2023-12-05 06:0054.78.53.8-51.438.5
2023-12-05 05:0068.36.76.0-52.238.3
2023-12-05 04:0072.07.75.8-54.741.1
2023-12-05 03:0075.47.34.7-56.740.3
2023-12-05 02:0079.97.07.0-61.941.4
2023-12-05 01:0080.56.84.6-60.638.0
2023-12-05 00:0086.37.64.7-67.843.3
2023-12-04 23:0097.86.85.7-70.043.8
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: 22:07 05-12-2023