For professionals and environmental engineers looking for , it is important to clarify that while the core US EPA models it uses (CALINE4, CAL3QHC, and CAL3QHCR) are technically public domain, the CALRoads View software suite itself is a premium commercial product developed by Lakes Environmental Software .
While CALRoads isn't free, Lakes Environmental offers several other high-quality tools for free download, including: calroads software free download
A bundled tool for pre-processing meteorological data for the CAL3QHCR model. For professionals and environmental engineers looking for ,
Below is a comprehensive guide to understanding this software, how to access it, and where you can find free alternatives for air quality modeling. If your budget does not allow for the
If your budget does not allow for the premium suite, you have two main routes for free air quality modeling:
Since CALRoads View is essentially a "wrapper" for EPA models, you can download the original command-line versions for free. These do not have a fancy interface, but they perform the same calculations. You can find them on the US EPA Support Center for Regulatory Atmospheric Modeling (SCRAM) .
A visual environment to draw roadway links and receptors directly on satellite maps.