Remarks:

(1) Time shown is in Hong Kong time.

(2) NO 2 - nitrogen dioxide, O 3 - ozone,

SO 2 - sulphur dioxide, CO - carbon monoxide,

PM 10 - respirable suspended particulates,

PM 2.5 - 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.