 The study examines the relationship between redlining and present-day summertime intra-urban land surface temperature anomalies in 108 urban areas in the United States. The results reveal that 94 percent of studied areas display consistent city scale patterns of elevated land surface temperatures in formerly redlined areas relative to their non-redline neighbors by as much as seven-seat, regionally, southeast and western cities display the differences while Midwest cities display the least. Nationally, land surface temperatures in redlined areas are approximately 2.6 C warmer than in non-redlined areas. The study suggests that historical housing policies may be directly responsible for disproportionate exposure to current heat events. This article was authored by Jeremy S. Hoffman, Vivek Shandas, and Nicholas Pendleton.