https://www.nbcnews.com/news/weather/heat-wave-west-enters-day-6-entire-state-arizona-soars-n1271166

Wildfire concerns are increasing as the combination of high heat and low humidity produces flammable conditions ripe for rapid fire ignition and spread.TAP TO UNMUTE

June 17, 2021, 8:35 AM PDT/UpdatedJune 17, 2021, 6:39 PM PDTByKathryn ProcivandJeremy Lewan

Historical records continue to be rewritten asextreme heat in the Westthreatens 40 million Americans on Thursday.

An unseasonably hot air mass has spurred highs to rise into the 90s and triple digits across much of the West this entire week, already smashing records in Wyoming, Utah, Arizona and Southern California.

Death Valley, already the holder of the hottest record on Earth with a reading of 134 degrees in 1913, established a new daily record of 125 Wednesday.

On Tuesday and Wednesday, Denver had rare back-to-back 100 degree days, which has only happened 14 times on record. And this week was the earliest in the year it has done…