DES MOINES — The heat advisory that was in effect this past weekend has been extended through this evening.

The National Weather Service in Des Moines announced that the advisory was extended through 5pm for Jasper, Polk, Clarke, Decatur, Lucas, Madison, Marion, Ringgold, Union, and Warren Counties; and through 8pm for Poweshiek, Tama, Appanoose, Mahaska, Monroe, Wayne, Davis, and Wapello Counties.

The National Weather Service in the Quad Cities extended the advisory for southeast Iowa, including Keokuk County, through 8pm.

Heat index values up to 105 degrees are expected throughout the area. Hot temperatures and high humidity may cause heat illnesses. Officials advise residents to drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.