134 million in the U.S. under alerts for ‘extremely dangerous and record-breaking’ heat wave. Regions that may see temperatures above 90 degrees Fahrenheit (32 degrees Celsius) or much higher into the triple digits (well above 37 degrees Celsius) include nearly all of the West Coast

Around 134 million people in the U.S. are under alerts as an “extremely dangerous and record-breaking” heat wave broils much of the country, according to the National Weather Service.

Regions that may see temperatures above 90 degrees Fahrenheit (32 degrees Celsius) or much higher into the triple digits (well above 37 degrees Celsius) include nearly all of the West Coast, the southern Plains, most of the lower Mississippi Valley into the Ohio Valley and parts of Florida, said Bob Oravec, a lead forecaster with the National Weather Service.