Welcome to Environmental Protection Department Air Quality Health Index Website


Eastern
Date TimeNO2O3SO2COPM10PM2.5
2024-04-25 22:0036.143.51.0-13.17.2
2024-04-25 21:0033.625.71.1-13.18.7
2024-04-25 20:0039.621.60.9-12.28.2
2024-04-25 19:0032.728.70.6-12.28.5
2024-04-25 18:0030.936.30.8-12.78.5
2024-04-25 17:0030.943.00.5-14.79.4
2024-04-25 16:0035.161.20.8-20.710.5
2024-04-25 15:0031.274.60.8-19.18.8
2024-04-25 14:0018.570.30.5-9.85.8
2024-04-25 13:0017.147.80.4-12.79.6
2024-04-25 12:0023.040.30.4-16.711.2
2024-04-25 11:0033.335.40.4-20.211.7
2024-04-25 10:0061.933.50.3-23.814.7
2024-04-25 09:0063.349.50.3-15.59.6
2024-04-25 08:0053.366.40.3-11.47.4
2024-04-25 07:0039.982.70.4-10.06.7
2024-04-25 06:0018.6106.60.5-5.43.3
2024-04-25 05:0017.0103.80.7-18.911.1
2024-04-25 04:0016.690.41.0-20.59.8
2024-04-25 03:0017.693.20.9-18.08.1
2024-04-25 02:0023.385.30.7-21.412.4
2024-04-25 01:0024.087.30.7-26.814.6
2024-04-25 00:0032.173.31.2-29.521.4
2024-04-24 23:0040.760.71.8-25.320.1
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: 22:07 25-04-2024