Ramon Carrillo, 36, faces two counts of child abuse and two counts of aggravated DUI.
Officers found Carrillo in the driver's seat of the car, which was turned off with the keys in the ignition. A 1-year-old was in a child seat in the back and a 2-year-old was lying partially on Carrillo's lap and the center armrest.
Officers said the children appeared to be under duress due to the very hot interior temperature of the car, which ranged between 115 and 120 degrees.