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Past 24 Hours Pollutant Concentration Summary

Central/Western
Date TimeNO2O3SO2COPM10PM2.5
2023-01-30 06:0033.957.73.0-30.119.9
2023-01-30 05:0021.174.03.1-30.118.7
2023-01-30 04:0028.268.83.0-30.219.6
2023-01-30 03:0027.170.43.2-28.818.5
2023-01-30 02:00-80.3--28.118.5
2023-01-30 01:0035.771.13.2-30.418.7
2023-01-30 00:0052.063.03.8-38.923.7
2023-01-29 23:0064.551.65.3-43.524.4
2023-01-29 22:0064.753.15.9-45.327.0
2023-01-29 21:0054.264.66.0-46.128.1
2023-01-29 20:0042.780.95.1-47.829.9
2023-01-29 19:0033.493.14.9-44.525.6
2023-01-29 18:0034.197.55.5-47.928.5
2023-01-29 17:0041.989.35.6-45.826.7
2023-01-29 16:0030.0101.65.2-44.325.8
2023-01-29 15:0023.9105.84.0-47.027.7
2023-01-29 14:0026.495.03.8-45.225.9
2023-01-29 13:0038.476.64.4-42.322.4
2023-01-29 12:0031.880.03.7-44.524.5
2023-01-29 11:0030.578.43.6-45.624.3
2023-01-29 10:0028.079.93.7-48.126.2
2023-01-29 09:0024.181.43.7-47.025.1
2023-01-29 08:0025.181.13.7-46.924.5
2023-01-29 07:0014.491.33.7-47.624.0
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.