On Monday, the city also set a record for the hottest overnight low temperature: 95 (35 Celsius). With Tuesday’s low of 94, the city has had nine straight days of temperatures that didn’t go below 90 at night, breaking another record there, according to National Weather Service meteorologist Matt Salerno, who called it “pretty miserable when you don’t have any recovery overnight.”
The lack of a nighttime cooldown can rob people without access to air conditioning of the break their bodies need to function properly.
“When you have several million people subjected to that sort of thermal abuse, there are impacts,” said NOAA Climate Analysis Group Director Russell Vose, who chairs a committee on national records.įor Phoenix, it’s not only the brutal daytime highs that are deadly. No other major city – defined as the 25 most populous in the United States – has had any stretch of 110-degree days or 90-degree nights longer than Phoenix, said weather historian Christopher Burt of the Weather Company. Human-caused climate change and a newly formed El Nino are combining to shatter heat records worldwide, scientists say. It reached 117 degrees (47.2 Celsius) by 3 p.m. The city's record streak of 110 degrees Fahrenheit (43 Celsius) or more stood out even amid sweltering temperatures across the globe.
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