DATE: September 18, 2017

SNIP: The historical average number of days per year in Phoenix that hit 100 degrees is a mind-bending 92. But that number is rapidly rising as climate change bears down on America’s fifth-largest city.

“It’s currently the fastest warming big city in the US,” meteorologist and former Arizonan Eric Holthaus told me in an email. A study from Climate Central last year projects that Phoenix’s summer weather will be on average three to five degrees hotter by 2050. Meanwhile, that average number of 100-degree days will have skyrocketed by almost 40, to 132, according to another 2016 Climate Central study. (For reference, over a comparable period, New York City is expected to go from two to 15 100-degree days.)

As bad as the deadly heat is getting, there’s another potential horror coming: drought. “As much as 20 percent of the [Colorado] River could dry up by 2050,” Holthaus told me.