EPA's Community Multiscale Air Quality (CMAQ) Model is a comprehensive computer software package that provides state-of-the-art representation of the processes that affect the fate of airborne pollutants.
As a reliable and cost-effective tool, CMAQ provides EPA, states and air quality managers with a vital understanding of atmospheric processes necessary for managing air quality and protecting public health.
You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.