To estimate climatic changes in atmospheric contributions to wildfire plume dispersion within the Intermountain West, we developed probability distribution functions (PDFs) of forecast changes to one-dimensional atmospheric profiles. An ensemble of models from the CMIP5 archive was used, with only output on climate model levels used to ensure maximum grid resolution within the PBL. Historical plume dispersion changes were analyzed using reanalysis data to determine any bias within the CMIP5 output. The determined PDFs of future atmospheric profiles will subsequently be assimilated into the System for Atmospheric Modeling (SAM) large-eddy simulation (LES) model to quantify changes to wildfire plume dispersion. This work will directly increase knowledge regarding PBL evolution within climate models, and has eventual implications for increased understanding of climatic trends in the dispersion of wildfire-borne aerosols within the PBL.