Hot weather hits much of Arizona, western U.S.
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© 2022 KNAU Arizona Public Radio Arizona Public Radio | Your Source for NPR News On Air Now Playing NPR News and Talk On Air Now Playing Classical Music and NPR News A sign warners hikers at Grand Canyon National Park of possible dangers of hiking in the heat. Swaths of the western United States are experiencing extreme heat.The recent heat wave broke the all-time temperature record for the month of September in Salt Lake City. The National Weather Service recorded a high on Monday of 103 degrees at Salt Lake City International Airport.