Welcome to Environmental Protection Department Air Quality Health Index Website


Central
Date TimeNO2O3SO2COPM10PM2.5
2024-02-28 01:00-65.41.0452.536.621.9
2024-02-28 00:0056.655.31.3530.139.424.6
2024-02-27 23:0051.959.71.1580.150.333.6
2024-02-27 22:0062.654.21.5789.152.539.2
2024-02-27 21:0061.248.41.7699.150.937.5
2024-02-27 20:0074.332.42.2745.046.636.0
2024-02-27 19:0080.430.62.4751.654.842.9
2024-02-27 18:00100.119.43.9821.451.138.8
2024-02-27 17:0072.133.21.9681.244.332.7
2024-02-27 16:0072.228.02.4681.644.130.0
2024-02-27 15:0083.722.43.3721.346.132.4
2024-02-27 14:0075.623.42.7760.545.532.3
2024-02-27 13:0066.721.12.7700.342.929.0
2024-02-27 12:0064.313.73.7715.343.828.2
2024-02-27 11:0061.57.53.3646.039.725.1
2024-02-27 10:0066.74.54.8697.139.526.4
2024-02-27 09:0070.33.56.4684.042.226.8
2024-02-27 08:0065.13.54.3592.234.622.8
2024-02-27 07:0054.69.42.0558.232.020.5
2024-02-27 06:0050.112.41.9535.434.623.4
2024-02-27 05:0055.511.62.3553.538.726.1
2024-02-27 04:0061.55.73.0644.545.228.1
2024-02-27 03:0067.13.93.3660.651.631.5
2024-02-27 02:0066.13.64.6748.952.932.8
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: 01:07 28-02-2024