The National Weather Service has issued an Excessive Heat Warning for 13 counties. La Paz, Mohave, and Yuma from 5/27 - 5/29. Gila, Maricopa, and Pinal from 5/27-5/31. Coconino and Yavapai from 5/28- 5/29. Cochise, Graham, Greenlee, Pima, and Santa Cruz from 5/28 - 5/31. High temperatures ranging from 100° F to 114° F are expected from 10 AM – 8 PM. Learn more about how to stay safe in extreme heat and stay informed about future heat alerts.