My five year old daughter turned completely red after being outside for about five the weather was not too hot, should i be concerned?

Flushed Cheeks?: Many children get this "flushed cheek" appearance while they are playing outside, especially if they are fair. Was sun involved? Might be a burn. If it resolves once coming inside then this is nothing to be concerned about. Don't forget the sunscreen. If she develops a fever have her seen, there is a virus that can cause "red cheeks" for a day.