Welcome to Environmental Protection Department Air Quality Health Index Website


Eastern
Date TimeNO2O3SO2COPM10PM2.5
2024-05-19 21:0026.787.80.6-9.67.6
2024-05-19 20:0026.197.40.6-14.310.5
2024-05-19 19:0029.296.60.7-18.610.6
2024-05-19 18:0030.991.00.7-22.49.9
2024-05-19 17:0024.892.60.9-30.615.5
2024-05-19 16:0022.3100.20.9-31.614.2
2024-05-19 15:0024.097.81.0-27.012.0
2024-05-19 14:0026.791.00.9-29.817.1
2024-05-19 13:0023.792.20.9-27.514.2
2024-05-19 12:0024.887.11.0-26.712.3
2024-05-19 11:0025.784.10.9-27.913.1
2024-05-19 10:0023.883.20.9-33.118.2
2024-05-19 09:0022.685.21.2-36.221.1
2024-05-19 08:0022.797.52.3-34.620.1
2024-05-19 07:0020.9114.12.8-37.223.6
2024-05-19 06:0015.4120.83.2-38.824.6
2024-05-19 05:0014.0123.92.7-36.522.9
2024-05-19 04:0012.5121.32.7-36.324.0
2024-05-19 03:0016.9111.93.0-37.624.8
2024-05-19 02:0018.6118.72.9-39.025.2
2024-05-19 01:0018.9125.82.9-36.523.7
2024-05-19 00:0025.0124.42.7-35.021.6
2024-05-18 23:0030.9119.42.4-34.822.0
2024-05-18 22:0027.1134.12.5-30.419.1
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: 21:07 19-05-2024