CALPUFF 6.42 can be downloaded from our software library for free. CALPUFF PRO.exe is the most common filename for this program's installer. The most popular versions among CALPUFF users are 6.4 and 5.2. Our built-in antivirus scanned this download and rated it as 100% safe. The software lies within Education Tools, more precisely Science Tools. This free tool was originally produced by Exponent, Inc. The size of the latest downloadable installer is 8.2 MB.
From the developer:
CALPUFF is a non-steady-state meteorological and air quality modeling system. The model has been adopted by the U.S. Environmental Protection Agency (USEPA) in its Guideline on Air Quality Models as the preferred model for assessing long-range transport of pollutants and their impacts on Federal Class I areas.
You may want to check out more software, such as Lakes Environmental CALPUFF View, which might be similar to CALPUFF.