Welcome to Environmental Protection Department Air Quality Health Index Website


Eastern
Date TimeNO2O3SO2COPM10PM2.5
2024-04-18 11:0022.054.90.9-20.213.7
2024-04-18 10:0026.547.40.9-17.811.6
2024-04-18 09:0025.646.70.9-16.211.3
2024-04-18 08:0027.539.71.0-18.113.2
2024-04-18 07:0028.133.91.1-17.213.2
2024-04-18 06:0026.633.21.1-17.412.9
2024-04-18 05:0025.435.81.2-15.011.0
2024-04-18 04:0014.149.81.0-18.114.3
2024-04-18 03:009.954.40.8-15.611.8
2024-04-18 02:008.656.30.9-14.811.5
2024-04-18 01:0010.753.71.0-16.413.4
2024-04-18 00:0018.446.41.3-16.013.0
2024-04-17 23:0016.748.41.1-16.714.0
2024-04-17 22:0013.352.61.1-16.113.6
2024-04-17 21:0021.445.61.0-16.413.6
2024-04-17 20:0018.852.40.7-18.014.7
2024-04-17 19:0030.446.80.7-17.814.5
2024-04-17 18:0026.054.30.9-19.315.6
2024-04-17 17:0025.054.30.8-19.215.7
2024-04-17 16:0019.858.00.8-20.716.6
2024-04-17 15:0020.356.00.6-21.716.8
2024-04-17 14:0022.951.50.7-19.415.3
2024-04-17 13:0019.754.20.6-18.013.2
2024-04-17 12:0018.553.60.7-20.916.6
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: 11:07 18-04-2024