A heat advisory remains in effect through 7 p.m. Friday for most of the state, including all of Southeast Arkansas.
The National Weather Services has included Jefferson, Arkansas, Bradley, Cleveland, Dallas, Desha, Drew, Grant and Lincoln counties in the warning.
The combination of hot temperatures and high humidity levels could create heat index values of at least 105 degrees, according to the Weather Service advisory, with the dangerous temperatures reached by early afternoon and continuing for several hours each day.
Heat-related illnesses are more likely with prolonged exposure to these conditions, the Weather Service warned. In areas where appreciable rain fell recently, humidity levels will be elevated and it will feel especially oppressive.
The Weather Service advises the public to take the following precautionary measures: drink plenty of nonalcoholic fluids, take frequent breaks in an air-conditioned environment, spend less time outdoors and keep pets inside if possible or ensure they have shade and water if left outside.