Saturday set a new highest minimum temperature for a June 21 in Chicago. Sunday and Monday could see new record high temperatures, with humidity levels making it feel well over 100 degrees.

The head index is expected to reach around 105 and an extreme heat warning is in effect until Monday, according to the National Weather Service.

A large dome of high pressure anchored over the eastern half of the country is bringing sweltering heat and strong winds to the Chicago area, with little relief in sight.