text:  With upwards of 134 million people in the U.S. under some type of heat alert, in places like Phoenix, Arizona, where the mercury often pushes into the triple digits, it is scorching. It's well over 100 degrees there today, with an excessive heat advisory in place and an expected high of 114 degrees. Temperatures will be even warmer over the next five days. Catherine Davis-Young is with member station KJZZ.