News Climate

What’s causing this summer’s extreme heat waves?

A photo of a temperature board in Phoenix, Arizona showing 110 degrees and the time 1:22 p.m.

Temperatures in Phoenix have reached above 43.3° Celsius (110° Fahrenheit) for 19 straight days, tying a record streak from 1974, with 9 straight days of temperatures not falling below 32.3° C (90°F).

Brandon Bell/Getty Images

By Nikk Ogasa

- More than 2 years ago

The dog days of summer are upon us. Brutal heat waves are roasting regions around the globe, smashing records with unrelenting severity.