Welcome to Environmental Protection Department Air Quality Health Index Website


Kwai Chung
Date TimeNO2O3SO2COPM10PM2.5
2021-01-22 23:00106.61.47.9-47.039.2
2021-01-22 22:00109.61.17.9-43.132.7
2021-01-22 21:00111.61.58.3-28.224.0
2021-01-22 20:00111.14.47.6-31.824.2
2021-01-22 19:00119.04.38.0-33.023.2
2021-01-22 18:00123.27.79.0-29.020.3
2021-01-22 17:00116.825.67.9-42.026.4
2021-01-22 16:0084.192.76.5-47.535.9
2021-01-22 15:0095.182.77.3-53.447.5
2021-01-22 14:00116.862.68.7-61.047.8
2021-01-22 13:00117.347.510.4-53.450.0
2021-01-22 12:00118.528.212.1-65.053.7
2021-01-22 11:00125.323.013.0-85.750.6
2021-01-22 10:00129.47.715.2-73.642.7
2021-01-22 09:00120.91.413.4-68.043.0
2021-01-22 08:00109.20.811.9-71.246.8
2021-01-22 07:0097.61.38.1-59.138.6
2021-01-22 06:0091.91.17.0-52.731.6
2021-01-22 05:0089.81.36.4-48.729.1
2021-01-22 04:0090.82.45.7-43.230.2
2021-01-22 03:0086.17.75.5-48.832.6
2021-01-22 02:0093.56.95.9-54.033.5
2021-01-22 01:00107.72.56.9-42.526.2
2021-01-22 00:00114.51.66.4-35.120.4
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: 23:07 22-01-2021