Welcome to Environmental Protection Department Air Quality Health Index Website


Eastern
Date TimeNO2O3SO2COPM10PM2.5
2024-03-01 01:0022.645.20.6-7.54.3
2024-03-01 00:0029.836.50.5-8.24.9
2024-02-29 23:0036.331.50.6-4.51.7
2024-02-29 22:0034.732.80.5-8.75.7
2024-02-29 21:0045.418.60.3-15.011.0
2024-02-29 20:0045.014.50.2-17.011.0
2024-02-29 19:0047.915.20.3-26.616.5
2024-02-29 18:0048.616.10.6-41.526.8
2024-02-29 17:0055.116.70.3-92.657.9
2024-02-29 16:0075.719.10.4-135.284.3
2024-02-29 15:0093.520.61.9-73.148.6
2024-02-29 14:0045.372.20.5-41.932.4
2024-02-29 13:0041.770.70.5-38.728.9
2024-02-29 12:0047.658.40.4-35.726.0
2024-02-29 11:0046.759.00.5-34.022.6
2024-02-29 10:0051.648.60.5-34.421.5
2024-02-29 09:0054.146.30.4-35.924.9
2024-02-29 08:0048.052.70.4-34.224.2
2024-02-29 07:0036.959.30.5-37.522.1
2024-02-29 06:0022.268.60.6-40.023.3
2024-02-29 05:0017.482.30.6-32.618.0
2024-02-29 04:0016.284.50.6-31.413.4
2024-02-29 03:0019.680.20.6-34.117.0
2024-02-29 02:0023.378.80.7-32.818.8
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.

Last revision date: 01:07 01-03-2024