The data files consist of velocity, turbulence, and concentration measurements gathered from EPA's Meteorological Wind Tunnel Laboratory. A data dictionary for each figure is provided in the zipped file package. This dataset is associated with the following publication: Retter, J., D. Heist, R.C. Owen, M. Pirhalla, T. Odom, and L. Brouwer. Neutral boundary layer urban dispersion in scaled uniform and nonuniform residential building arrays. BOUNDARY-LAYER METEOROLOGY. Springer, New York, NY, USA, 191(2): 32, (2025).