The air quality in Kingston is measured by its Air Quality Index (AQI). The AQI, which was created by the United States Environmental Protection Agency (EPA), measures the daily concentrations of pollutants in the air. These concentrations are measured against a scale of 0 to 50.
The air quality in Kingston is not nearly as bad as in places with a lot of heavy industry. In the morning, the air is composed mainly of carbon dioxide, oxygen and nitrogen compounds from plants, and some ozone from solar radiation. In the afternoon, particulate matter from industry and automobiles increases the concentration of gases such as sulfur dioxide and nitrogen oxides.