Welcome to Environmental Protection Department Air Quality Health Index Website


Eastern
Date TimeNO2O3SO2COPM10PM2.5
2023-12-04 17:0066.398.21.8-54.336.9
2023-12-04 16:0064.494.41.7-54.035.5
2023-12-04 15:0054.793.61.7-51.433.1
2023-12-04 14:0054.281.71.6-52.035.2
2023-12-04 13:0063.258.61.3-51.735.4
2023-12-04 12:0058.845.71.4---
2023-12-04 11:0065.532.81.2---
2023-12-04 10:0059.830.11.2---
2023-12-04 09:0051.032.51.5-34.425.2
2023-12-04 08:0048.235.41.8-34.425.2
2023-12-04 07:0036.042.52.0-34.425.2
2023-12-04 06:0020.467.61.7-34.425.2
2023-12-04 05:0015.885.11.9-34.425.2
2023-12-04 04:0015.690.52.3-34.425.2
2023-12-04 03:0016.795.92.2-34.425.2
2023-12-04 02:0017.097.31.6-34.425.2
2023-12-04 01:0023.092.91.8-34.425.2
2023-12-04 00:0027.190.41.6-34.425.2
2023-12-03 23:0027.1100.92.5-34.425.2
2023-12-03 22:0031.5102.93.2-34.425.2
2023-12-03 21:0030.9102.83.2-34.425.2
2023-12-03 20:0034.398.82.8-34.425.2
2023-12-03 19:0034.1100.02.7-34.425.2
2023-12-03 18:0033.098.72.5-34.425.2
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.

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Last revision date: 17:07 04-12-2023