
The Guinness World Record for hottest temperature ever recorded is 134 degrees Fahrenheit. In Phoenix and Tempe, Arizona, it's touched 119 degrees and just barely gone below 90 at any point over the past week, according to the National Weather Service.
It's been so hot that regional flights in Phoenix have been canceled, because some planes cannot be operated in the excessive heat, according to the Washington Post.

At Phoenix Sky Harbor International Airport, departure signs show regional jet cancellations and American Airlines says seven regional flights have been delayed and 43 have been canceled because of a heat wave as temperatures climb to near-record highs Tuesday, June 20, 2017, in Phoenix.
Officials are saying the recent hot weather in California is a wake up call for the heat ahead. The National Weather Service now has a tool that can help understand the Heat Risk to better be prepared and safe during outdoor activities this summer.



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