Need help compiling and using the I/O API? Search topics and/or create a new one that describes your experience. https://github.com/cjcoats/ioapi-3.2


Need help running CMAQ? Search the topics posted here, and/or submit a new one to get help from others!


Need help running MCIP? The latest release is available under the CMAQ repository under the PREP>MCIP directory within the 5.2.1 branch of CMAQ


Need help running SMOKE or the NEI Platform? Check the topics posted here and if you can’t find the answer submit a new one.

Spatial Allocator

Need help running the Spatial Allocator? First search for related topics and if you can’t find the answer, post your new topic here.


For questions and issues related to running CMAQ-DDM-3D.


For questions and issues related to running CMAQ-ISAM.


Need help running AMET? If so, first search existing topics under this category, and if your issue is new, post a new topic.


Post here to learn and share your knowledge about the Sulfur Tracking Model (STM) version of CMAQ.

Site Feedback

Discussion about this site, its organization, how it works, and how we can improve it.


Post questions and share your knowledge on how to use VERDI for analysis and visualization of CMAQ inputs and output data.


Post questions, discuss and share answers related to setting up and running WRF-CMAQ.


Need help installing a CMAS Supported Model? Tag your question with this category. Please describe the compute server, compiler name and version, and include any log messages.