Welcome to Environmental Protection Department Air Quality Health Index Website


North
Date TimeNO2O3SO2COPM10PM2.5
2021-06-21 06:0014.253.63.4205.318.711.8
2021-06-21 05:00-60.03.5203.920.814.8
2021-06-21 04:007.864.23.5204.121.513.3
2021-06-21 03:008.059.03.0221.717.012.4
2021-06-21 02:007.763.43.0210.216.812.5
2021-06-21 01:006.869.63.0207.321.815.6
2021-06-21 00:005.773.82.5214.518.714.9
2021-06-20 23:008.270.92.8213.313.310.3
2021-06-20 22:008.366.03.0205.912.77.0
2021-06-20 21:0010.063.82.6214.012.15.5
2021-06-20 20:0015.361.63.2205.620.57.4
2021-06-20 19:009.168.03.2182.627.011.2
2021-06-20 18:0011.574.52.5224.023.811.3
2021-06-20 17:008.287.93.4239.322.29.6
2021-06-20 16:008.393.92.6219.522.810.3
2021-06-20 15:008.0104.63.1212.319.611.0
2021-06-20 14:007.695.72.8205.416.112.5
2021-06-20 13:009.391.72.7202.415.412.0
2021-06-20 12:009.688.62.9188.417.49.6
2021-06-20 11:0010.979.12.9200.119.011.2
2021-06-20 10:007.675.52.4185.118.311.4
2021-06-20 09:006.869.93.0181.316.69.3
2021-06-20 08:006.566.43.1176.413.59.1
2021-06-20 07:009.261.33.3183.016.29.9
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 21-06-2021