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Causeway Bay
Date TimeNO2O3SO2COPM10PM2.5
2024-05-21 03:0016.768.31.2319.23.92.1
2024-05-21 02:0021.664.41.3331.39.9-
2024-05-21 01:0021.868.21.3305.820.419.4
2024-05-21 00:0024.2-1.2303.621.719.5
2024-05-20 23:0025.568.21.3308.324.522.0
2024-05-20 22:0054.248.11.9420.623.620.3
2024-05-20 21:0040.260.41.4438.323.618.7
2024-05-20 20:0031.461.61.4442.122.516.1
2024-05-20 19:0048.946.61.8468.823.416.1
2024-05-20 18:0055.248.22.0469.524.017.1
2024-05-20 17:0059.940.22.0442.023.317.4
2024-05-20 16:0074.625.63.1544.226.120.1
2024-05-20 15:0082.624.12.8586.827.922.6
2024-05-20 14:0071.235.72.4535.025.922.6
2024-05-20 13:0063.938.51.9476.425.720.3
2024-05-20 12:0058.935.42.1463.125.621.1
2024-05-20 11:0056.834.11.9497.434.425.6
2024-05-20 10:0045.237.01.7393.839.029.4
2024-05-20 09:0046.836.01.8349.732.922.7
2024-05-20 08:0046.141.71.4309.726.518.4
2024-05-20 07:0028.755.11.3259.521.416.9
2024-05-20 06:0014.468.11.1244.521.616.3
2024-05-20 05:00-70.3--15.013.0
2024-05-20 04:0015.070.10.6232.415.614.5
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: 03:07 21-05-2024