Welcome to Environmental Protection Department Air Quality Health Index Website


Eastern
Date TimeNO2O3SO2COPM10PM2.5
2022-01-23 01:0025.756.81.0-2.0-
2022-01-23 00:0028.656.30.7-5.1-
2022-01-22 23:0038.652.10.7-7.81.6
2022-01-22 22:0031.352.90.5-10.04.0
2022-01-22 21:0036.848.10.5-10.35.4
2022-01-22 20:0045.241.40.6-9.40.6
2022-01-22 19:0058.733.80.4-9.4-
2022-01-22 18:0063.231.20.3-9.00.8
2022-01-22 17:0062.032.40.3-11.33.0
2022-01-22 16:0057.143.10.5-12.27.7
2022-01-22 15:0059.140.50.3-11.76.8
2022-01-22 14:0052.343.90.4-11.47.8
2022-01-22 13:0047.744.70.4-9.26.8
2022-01-22 12:0056.635.80.3-8.22.6
2022-01-22 11:0045.244.50.4-5.60.6
2022-01-22 10:0048.537.90.5-3.10.4
2022-01-22 09:0055.928.50.4-4.30.9
2022-01-22 08:0033.044.20.5-8.02.4
2022-01-22 07:0025.849.80.5-10.23.4
2022-01-22 06:0022.755.30.5-6.42.4
2022-01-22 05:0013.766.50.6-4.74.0
2022-01-22 04:0013.369.30.7-7.1-
2022-01-22 03:0014.473.80.6-10.2-
2022-01-22 02:0017.169.70.7-14.99.2
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.

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Last revision date: 01:07 23-01-2022