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API and Air Monitoring Background Information

Air Pollution Index Background Information

Sources of Air Pollutants You can learn about a number of important pollutants, what they do and where they come from. Just click on the pollutant that interests you most from the list below. Sulphur Dioxide Nitrogen Oxides Carbon Monoxide Ozone and Photochemical Oxidants Total Suspended Particulates Respirable Suspended Particulates Please click below to check the Hong Kong Air Quality Objectives for the above air pollutants. Hong Kong Air Quality Objectives

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