Jump to main content.

Community Multiscale Air Quality (CMAQ)

Research Programs

Air Quality Forecasting

Air Toxics Modeling

Climate Impact on Air Quality

Fine-Scale Modeling

Model Development

Model Evaluation

Model Applications

Multimedia Modeling

NOx Accountability

The primary goals for the Models-3/Community Multiscale Air Quality (CMAQ) modeling system are to improve 1) the environmental management community's ability to evaluate the impact of air quality management practices for multiple pollutants at multiple scales and 2) the scientist’s ability to better probe, understand, and simulate chemical and physical interactions in the atmosphere. The newest Models-3/CMAQ version 4.6 now available for download from the CMAS Website Exit EPA Disclaimer.

Information about the changes to the new model and release notes are available from the "Release Notes" link on the right side of this page.

Tutorial and Training course Exit EPA Disclaimerinformation for Model-3/CMAQ and related products can also be found on the CMAS website.

Air Toxics
CMAQ Model
Science Documentation
Release Notes v4.6
Release Notes v4.5
Release Notes v4.4
Release Notes v4.3

Atmospheric Modeling

Research & Development | National Exposure Research Laboratory

Local Navigation

Jump to main content.