Welcome to Environmental Protection Department Air Quality Health Index Website


Central
Date TimeNO2O3SO2COPM10PM2.5
2024-05-16 00:0045.8132.52.6283.226.915.3
2024-05-15 23:0082.6101.02.8311.730.719.4
2024-05-15 22:0076.6101.12.8369.630.619.3
2024-05-15 21:0073.8104.42.6343.331.919.0
2024-05-15 20:0067.4121.72.3395.034.121.6
2024-05-15 19:0091.5106.62.8415.935.617.9
2024-05-15 18:00101.5104.13.1369.235.817.1
2024-05-15 17:0098.5112.43.5337.541.117.5
2024-05-15 16:0095.0111.03.7337.833.513.4
2024-05-15 15:0087.6117.43.4357.135.416.6
2024-05-15 14:0072.3126.03.4356.436.219.1
2024-05-15 13:0067.1127.33.6430.336.417.6
2024-05-15 12:00114.286.74.1312.640.116.1
2024-05-15 11:0091.987.63.4311.840.416.9
2024-05-15 10:0077.987.33.3278.330.814.1
2024-05-15 09:0066.380.33.1251.127.813.5
2024-05-15 08:0058.185.42.6260.025.011.6
2024-05-15 07:0037.3-2.4226.723.810.7
2024-05-15 06:0032.2110.32.4226.823.511.9
2024-05-15 05:0023.8118.92.1216.421.29.5
2024-05-15 04:0019.2133.12.1204.320.99.0
2024-05-15 03:0023.5128.01.9205.022.910.9
2024-05-15 02:0036.2120.82.1233.821.69.0
2024-05-15 01:0033.7113.02.3232.523.811.2
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.

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Last revision date: 00:07 16-05-2024