From a New York Times column by David Wallace-Wells headlined “This Summer Is Pointing Us Toward Uncharted Territory”:

On the last day of July, Phoenix finally registered a temperature high below 110 degrees Fahrenheit — the first time that had happened in 31 days. The temperature of pavement in the city measured up to 180 degrees, and local burn units are full of patients who simply fell to the ground and were burned, as though Maricopa County’s whole surface were a skillet on the stove. The I.C.U.s are filling up, too, and the region’s iconic saguaro cactuses are crumpling and collapsing in the heat.