Density Map of Carbon Monoxide Emissions 1997
Source: Environmental Protection Agency
Map Description:
This map depicts carbon monoxide emissions by county in 1997. Carbon monoxide is a colorless, odorless, and at much higher levels, a poisonous gas formed when carbon in fuels is not burned completely. It is a product of motor vehicle exhaust, which contributes about 60% of all carbon monoxide emissions nationwide. Other sources of carbon monoxide emissions include industrial processes, non-transportation fuel combustion, and natural sources such as wildfires.

Carbon monoxide enters the bloodstream through the lungs and reduces oxygen delivery to the body's organs and tissues. At higher levels of exposure, carbon monoxide can be poisonous, and healthy individuals may also be affected. Visual impairment, reduced work capacity, reduced manual dexterity, poor learning ability, and difficulty in performing tasks are all associated with exposure to elevated carbon monoxide levels.

Cautions for this Product:
This map only provides a general overview and does not identify potential sources of air pollution.

For Further Information: