Only one cooling center remains open all night, when the concrete radiates heat stored during hellish daytime hours

Even after the sun sinks below the horizon in Phoenix, Arizona, the concrete cityscape continues to cook. In the midst of a record-breaking heatwave that’s kept daily highs above 110F (43.3C) for more than 18 consecutive days, the evening hours have offered little reprieve. For more than a week low temperatures breached 90F (32.2C), breaking a grim record recently set in 2020.

While the city is considered a leader in mitigating the dangers of extreme heat and has worked to secure widespread access to cooling centers and hydration stations during the scorching summer days, most facilities here close before nightfall. There’s only a single center that operates around the clock in a city of more than 1.6 million people, even as dangerous conditions grow more deadly – especially for those who can’t access overnight relief.