Welcome to Environmental Protection Department Air Quality Health Index Website


Kwai Chung
Date TimeNO2O3SO2COPM10PM2.5
2024-03-29 06:0078.60.17.5-42.024.9
2024-03-29 05:0082.20.011.0-41.823.9
2024-03-29 04:0082.90.07.7-41.924.7
2024-03-29 03:0084.90.06.4-41.724.2
2024-03-29 02:0077.35.13.3-32.116.2
2024-03-29 01:0076.211.34.5-35.118.7
2024-03-29 00:0092.66.86.6-40.522.4
2024-03-28 23:0086.418.75.7-39.821.7
2024-03-28 22:00100.611.67.8-42.322.8
2024-03-28 21:00119.32.111.1-42.423.2
2024-03-28 20:00130.10.316.8-44.724.4
2024-03-28 19:00130.90.710.9-39.220.3
2024-03-28 18:00106.917.46.5-34.915.7
2024-03-28 17:0076.440.51.2-29.514.6
2024-03-28 16:0092.024.86.0-36.019.5
2024-03-28 15:0096.620.07.0-31.117.5
2024-03-28 14:0086.832.58.0-28.915.0
2024-03-28 13:0066.746.72.3-27.713.7
2024-03-28 12:0083.731.35.5-30.515.8
2024-03-28 11:0095.216.43.4-34.619.0
2024-03-28 10:0085.317.52.6-31.515.3
2024-03-28 09:0074.123.21.8-24.610.8
2024-03-28 08:0033.959.51.1-25.311.2
2024-03-28 07:0031.262.51.1-24.710.5
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: 06:07 29-03-2024