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Fort Smith/Fayetteville News | 5newsonline KFSM 5NEWS | Get the local news and weather where you live from 5NEWS. Covering Fort Smith, Fayetteville, Bentonville, and all of Northwest Arkansas and the River Valley.

Dangerous heat on Saturday; Heat Index from 100º to 105º+

Heat will continue to build across the region this weekend with highs expected to top out in the 90s and a heat index in the low 100s.
Credit: 5NEWS
Credit: 5NEWS

The heat index will be at the hottest during the afternoon and the evening on Saturday. Most locations will be close to 100º with actual air temperatures in the 90s. 

Credit: 5NEWS

Of the hottest days this weekend, Saturday is looking hotter than Sunday but not by much. High temperatures will be in the mid 90s with the heat index still near 100º.

Credit: 5NEWS

The National Weather Service has issued a Heat Advisory for locations that could experience a heat index over 105º. This includes all of the Arkansas River Valley. 

While still hot, the heat index in NW Arkansas is expected to be closer to 98-103º and just barely below the NWS advisory criteria. 

-Garrett