This dataset provides the data and code associated with the publication Rice et al. "Wildfires increase concentrations of hazardous air pollutants in downwind communities". This dataset is associated with the following publication: Rice, R., K. Boaggio, N. Olson, K. Foley, C. Weaver, J. Sacks, S. McDow, A. Holder, and S. Leduc. Wildfires increase concentrations of hazardous air pollutants in downwind communities. ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, USA, 14, (2023).