Welcome to Environmental Protection Department Air Quality Health Index Website


Eastern
Date TimeNO2O3SO2COPM10PM2.5
2024-05-12 08:0038.448.90.8-27.412.8
2024-05-12 07:0021.965.70.7-28.113.9
2024-05-12 06:0019.072.80.8-30.314.8
2024-05-12 05:0014.284.20.9-31.614.2
2024-05-12 04:0014.187.31.0-31.215.2
2024-05-12 03:0018.084.51.1-29.215.7
2024-05-12 02:0026.181.42.1-30.516.0
2024-05-12 01:0038.980.42.6-30.216.2
2024-05-12 00:0029.795.81.7-27.614.5
2024-05-11 23:0029.895.61.2-26.713.8
2024-05-11 22:0032.393.91.4-25.413.7
2024-05-11 21:0040.688.41.6-24.613.9
2024-05-11 20:0046.783.61.5-28.915.9
2024-05-11 19:0044.095.92.3-27.914.0
2024-05-11 18:0049.6112.22.5-28.614.3
2024-05-11 17:0042.8108.21.9-30.115.4
2024-05-11 16:0042.298.61.8-33.113.9
2024-05-11 15:0040.595.51.6-38.114.2
2024-05-11 14:0038.694.52.2-36.713.8
2024-05-11 13:0034.697.81.6-25.511.5
2024-05-11 12:0029.8103.71.3-28.013.6
2024-05-11 11:0031.597.41.3-27.312.2
2024-05-11 10:0033.091.11.4-25.310.6
2024-05-11 09:0034.281.41.1-24.09.4
Remarks:

(1) Time shown is in Hong Kong time.

(2) Concentration shown is in microgram per cubic metre (µg/m3).

(3) Abbreviation:
NO2 - nitrogen dioxide, O3 - ozone,
SO2 - sulphur dioxide, CO - carbon monoxide,
PM10 - respirable suspended particulates,
PM2.5 - fine suspended particulates

(4) The pollutant concentration is based on real time data taken directly from EPD's Air Quality Monitoring Network.

Last revision date: 08:07 12-05-2024