lived through something similar in 1980 Texas, with higher humidity than you get in Az.
here’a a link to news story
https://www.dallasnews.com/news/news/2010/08/06/Dallas-Fort-Worth-heat-wave-of-1868
All temps listed taken at DFW International Airport, the rest of the area was considerably hotter at any given time.
Gads I remember that summer...my folks couldn’t afford to keep the air conditioning on all the time so it was consistently in the 90’s in our house during the day.
Cars with vinyl seats and bad a/c. I wasn’t allowed outside between 10 am and 7pm for the most part of it as well