An Excessive Heat Watch is in effect late Thursday morning through Thursday evening for western Pima County, the Tohono O'odham Nation, and south central/southeast Pinal County.
The Excessive Heat Watch is also in effect late Friday morning through Friday evening for the same areas, except southeast Pinal county.
Highs temperatures are expected to range from 108 to 115 degrees in these areas.
Heat is the number one weather-related killer in Arizona and the nation. Please limit your outdoors and stay well hydrated.