An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to www.epa.gov. This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Community Multiscale Air Quality Modeling System (CMAQ)

Contact Us

CMAQ Community

Learn about the many individuals and organizations that use and contribute to the CMAQ system and view the results of our 2016 and 2018 User Surveys

Stock photo of binary code being streamed in space towards a globe - also a link to a page describing the CMAQ user communityCMAQ User Community

Discover the global nature of CMAQ's user community.
 
 

Stock cartoon of hands holding up paper surveys - also a link to the results from the 2016 Community SurveyCMAQ Community Survey Results

View the results of the 2018 CMAQ User's Survey.
 
 

Contact Us to ask a question, provide feedback, or report a problem.

Community Multiscale Air Quality Modeling System (CMAQ)