Welcome to Environmental Protection Department Air Quality Health Index Website


Central
Date TimeNO2O3SO2COPM10PM2.5
2024-03-29 14:00139.033.05.7613.254.836.9
2024-03-29 13:00121.930.45.5598.962.739.4
2024-03-29 12:00115.210.85.2639.261.637.4
2024-03-29 11:00100.35.56.4601.057.036.9
2024-03-29 10:0096.74.85.9657.553.935.6
2024-03-29 09:0085.13.35.2613.251.133.8
2024-03-29 08:0080.12.35.0482.944.928.7
2024-03-29 07:0080.22.05.1428.141.325.1
2024-03-29 06:0071.02.33.0504.739.625.1
2024-03-29 05:0071.52.22.8461.041.828.7
2024-03-29 04:0074.54.52.5465.341.627.2
2024-03-29 03:00-2.8--42.125.4
2024-03-29 02:0087.01.73.3456.745.926.0
2024-03-29 01:0096.31.84.2542.447.225.2
2024-03-29 00:00107.52.04.6610.450.229.1
2024-03-28 23:00106.62.53.9612.749.926.8
2024-03-28 22:00115.71.85.3676.256.731.7
2024-03-28 21:00134.02.17.2846.863.332.0
2024-03-28 20:00135.72.48.7933.456.927.7
2024-03-28 19:00130.04.37.6781.840.224.3
2024-03-28 18:00119.26.05.4961.643.124.4
2024-03-28 17:00122.76.96.3670.345.422.4
2024-03-28 16:00106.116.43.9537.749.125.0
2024-03-28 15:0088.317.54.4621.836.119.4
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.

Last revision date: 14:06 29-03-2024