Welcome to Environmental Protection Department Air Quality Health Index Website


Tung Chung
Date TimeNO2O3SO2COPM10PM2.5
2024-04-30 00:003.336.80.3378.711.97.6
2024-04-29 23:003.739.80.1381.78.24.4
2024-04-29 22:002.539.70.2395.110.87.2
2024-04-29 21:002.739.90.2374.011.57.9
2024-04-29 20:003.941.80.7408.311.47.7
2024-04-29 19:005.342.50.3388.18.85.1
2024-04-29 18:008.341.50.4393.69.15.3
2024-04-29 17:007.840.70.4380.68.85.5
2024-04-29 16:007.941.10.4381.69.96.5
2024-04-29 15:007.041.50.3383.99.45.8
2024-04-29 14:009.540.60.4420.212.78.9
2024-04-29 13:009.039.70.1424.710.16.4
2024-04-29 12:008.040.90.0415.07.63.9
2024-04-29 11:006.941.90.7393.812.28.2
2024-04-29 10:009.737.40.3392.411.47.6
2024-04-29 09:0010.235.70.1382.411.47.7
2024-04-29 08:0011.733.20.7428.213.89.5
2024-04-29 07:004.640.00.3383.812.16.0
2024-04-29 06:008.440.00.4414.610.24.4
2024-04-29 05:004.647.50.5383.712.46.4
2024-04-29 04:003.947.90.4395.812.56.4
2024-04-29 03:007.447.60.0386.011.94.4
2024-04-29 02:009.653.40.7431.314.96.7
2024-04-29 01:0011.453.00.3397.911.64.9
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.

Last revision date: 00:07 30-04-2024