The Inequality of City Heat
Cities can get much hotter than surrounding suburban and rural areas, particularly at night. This is because of the “urban heat island” effect, in which concrete, pavement, bricks and other hard surfaces absorb heat in urban areas during the daytime, then release it during the evenings.
Within cities, tree cover and temperature can vary largely between streets and neighborhoods. Papers published this year have helped illuminate and quantify the injustices of urban heat in 'redlined' neighborhoods, typically home to Black and immigrant communities, that have less canopy cover and higher temperatures than their whiter areas.