Welcome to Environmental Protection Department Air Quality Health Index Website


Central/Western
Date TimeNO2O3SO2COPM10PM2.5
2024-04-16 11:0010.452.24.9---
2024-04-16 10:0016.143.14.4-13.410.0
2024-04-16 09:0021.934.54.7-12.710.2
2024-04-16 08:0017.336.54.5-15.413.3
2024-04-16 07:0027.422.55.0-20.517.4
2024-04-16 06:0040.19.25.6-27.823.3
2024-04-16 05:0043.85.25.2-22.619.0
2024-04-16 04:0020.428.74.9-23.921.1
2024-04-16 03:008.341.74.6-25.822.8
2024-04-16 02:0020.335.15.2-31.127.7
2024-04-16 01:00-46.8--33.830.2
2024-04-16 00:0013.543.35.3-32.929.7
2024-04-15 23:0016.740.45.1-30.827.6
2024-04-15 22:0012.246.94.8-30.126.6
2024-04-15 21:009.551.54.5-28.324.1
2024-04-15 20:0018.443.24.7-26.821.6
2024-04-15 19:0023.839.14.3-22.316.3
2024-04-15 18:0020.446.23.9-18.713.4
2024-04-15 17:0013.553.33.6-17.110.9
2024-04-15 16:0016.049.13.8-18.411.6
2024-04-15 15:0018.649.73.7-19.012.0
2024-04-15 14:0030.046.23.9-18.612.7
2024-04-15 13:0034.932.65.2-17.312.0
2024-04-15 12:0014.951.34.0-20.714.1
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: 11:08 16-04-2024