Welcome to Environmental Protection Department Air Quality Health Index Website


Tung Chung
Date TimeNO2O3SO2COPM10PM2.5
2023-02-05 18:0027.041.112.2380.767.463.7
2023-02-05 17:0039.029.413.9461.254.640.5
2023-02-05 16:0045.617.013.0497.658.543.7
2023-02-05 15:0042.827.612.1459.824.818.0
2023-02-05 14:0019.749.312.5371.013.211.0
2023-02-05 13:0012.158.612.0333.312.310.2
2023-02-05 12:0013.552.012.0357.016.614.2
2023-02-05 11:0011.251.712.2371.918.215.6
2023-02-05 10:0012.253.111.2342.120.816.9
2023-02-05 09:0012.152.712.1339.418.314.1
2023-02-05 08:009.156.711.5340.915.010.9
2023-02-05 07:009.754.911.7347.117.714.0
2023-02-05 06:008.059.411.0358.420.315.7
2023-02-05 05:008.260.912.0356.027.721.5
2023-02-05 04:0010.256.311.2414.735.227.6
2023-02-05 03:0012.454.711.6406.938.728.2
2023-02-05 02:0014.553.611.3398.440.125.1
2023-02-05 01:00----36.022.1
2023-02-05 00:0018.159.311.4366.432.922.4
2023-02-04 23:0028.347.510.8365.626.219.0
2023-02-04 22:0028.746.411.8361.418.113.1
2023-02-04 21:0032.439.011.2364.014.610.4
2023-02-04 20:0025.356.211.8311.510.96.8
2023-02-04 19:00----12.38.1
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: 18:07 05-02-2023