Carbon Monoxide
National Summary
State and Local Summaries
National Summary of Carbon Monoxide Emissions
EPA prepares a national database of air emissions information with input from numerous state and local air agencies, from tribes, and from industry. The chart below shows the national summary of carbon monoxide (CO) emissions by source sector based on the most recent inventory. View information on air quality standards, trends, health effects, and programs to reduce CO.
![Note to users of screen readers: The following links provide the chart data for national carbon monoxide emissions by source sector.](images/spacer.gif)
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State and Local Summary of Carbon Monoxide Emissions
Sources of air pollutant emissions vary from one area to another. State and local summaries are available from the maps below.
![Map of the United States](images/us-states.gif)