Welcome to Environmental Protection Department Air Quality Health Index Website


Mong Kok
Date TimeNO2O3SO2COPM10PM2.5
2024-05-09 02:0030.8119.11.9530.426.415.3
2024-05-09 01:0049.3110.02.3606.726.916.5
2024-05-09 00:0062.4104.42.0617.723.915.3
2024-05-08 23:0083.186.42.1705.826.818.7
2024-05-08 22:0076.491.32.2665.234.226.1
2024-05-08 21:0090.382.82.5766.445.436.3
2024-05-08 20:00104.780.53.2875.657.548.2
2024-05-08 19:00123.568.73.8894.943.634.9
2024-05-08 18:00115.564.03.3757.537.729.0
2024-05-08 17:00123.450.14.3722.735.127.1
2024-05-08 16:00117.5-3.9716.335.126.5
2024-05-08 15:00-52.93.9699.734.626.9
2024-05-08 14:00103.046.73.9703.336.630.1
2024-05-08 13:00101.740.54.0749.137.229.0
2024-05-08 12:0093.346.53.3745.335.426.8
2024-05-08 11:0092.237.23.1701.931.223.0
2024-05-08 10:0086.337.02.6671.827.520.7
2024-05-08 09:0070.741.92.4573.428.823.2
2024-05-08 08:0073.937.62.6612.830.625.4
2024-05-08 07:0062.848.72.2575.326.422.4
2024-05-08 06:0028.083.61.8562.720.316.7
2024-05-08 05:0027.582.11.6473.218.014.4
2024-05-08 04:0027.284.51.5451.719.215.0
2024-05-08 03:0041.570.41.5522.321.617.3
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.

Mobile Version | Desktop Version
Last revision date: 02:07 09-05-2024