Cook County Forest Preserve pools open Saturday, and they'll be free this Saturday and Sunday.

The district's pools include the Whealan Pool Aquatic Center, 6200 W. Devon Ave., the Cermak Family Aquatic Center, 7600 W. Ogden Ave., and the Green Lake Family Aquatic Center on the northeast corner of 159th Street and Torrence Avenue.

The pools are open from 11 a.m. to 7 p.m. daily starting Saturday.