Cities worldwide are experiencing record-breaking summer temperatures. Urban environments exacerbate under a Creative extreme heat, resulting in not only the urban heat island but also intracity variations in heat exposure. Under- Commons Attribution standing these disparities is crucial to support equitable climate mitigation and adaptation efforts. We found NonCommercial persistent negative correlations between daytime land surface temperature (LST) and median household License 4.0 (CC BY-NC). income across the Los Angeles metropolitan area based on Ecosystem Spaceborne Thermal Radiometer Experiment on Space Station observations from 2018 to 2021. Lower evapotranspiration resulting from the unequal distribution of vegetation cover is a major factor leading to higher LST in low-income neighborhoods. Disparities worsen with higher regional mean surface temperature, with a $10,000 decrease in income leading to