Vernon is 89-years-old and is blind in one eye. Elaine is 85-years-old and suffers from dementia.
The Schweisthals are believed to have left their Elmhurst home en-route to Mount Prospect to meet friends for lunch. They never arrived.
They are believed to be driving a silver colored 2001 Toyota Camry with Illinois license plates KYY986.
Anyone with information is asked to call Elmhurst police.