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Community Multiscale Air Quality Modeling System (CMAQ)

Download CMAQ

CMAQ is a Linux-based model that requires significant computational resources and specific system configurations to run. While there are no precompiled executables for CMAQ, the sections below are designed to help both new and veteran CMAQ users download, compile and run the model. Users can access and download the newest CMAQ model code, read the updates for the latest version, download test cases or utilize the resources to assist in operating CMAQ. 

Stock computer code - also a link to access CMAQ source codeModel Source Code 

Access CMAQ source code, step-by-step instructions for downloading the CMAQ base model, and guidance on building the two-way CMAQ system.

Stock photo of computer and documents - also a link to CMAQ documentationDocumentation

Find the release notes for recent versions of the model system, a CMAQ User's Guide, and helpful tutorials on common tasks.

Stock photo of a server room - also link to CMAQ inputs and test casesModel Inputs and Test Cases

Download test case data and instructions as well as additional model inputs.

Stock photo of computer surrounded by holograms of data - also a link to a page with resources and utilities for model usersResources/Utilities for Model Users

Utilize the CMAS Center's help desk and training courses. Browse software programs for preparing CMAQ inputs as well as evaluating and visualizing CMAQ outputs.