WDIY (88.1 FM) is a community public radio station licensed to Allentown, Pennsylvania, with studios in Bethlehem. The station serves the Lehigh Valley region of eastern Pennsylvania and western Warren County in New Jersey.
WDIY has an air staff of over 100 volunteers and a paid management staff. It has been broadcasting since January 8, 1995. The station is licensed to Lehigh Valley Community Broadcasters Association, Inc., a nonprofit organization. The station's mission "is to engage the Lehigh Valley community through a wide-ranging exchange of music, arts, news and culturally diverse information."
While WHYY-FM in Philadelphia puts a grade B signal into Allentown and WVIA-FM in Scranton has long operated translators in Allentown and Bethlehem, the Lehigh Valley lacked an NPR station that specifically served it until WDIY's arrival.
In 2015, the station tripled the broadcast power of its main frequency at 88.1 FM from 100 watts to 300 watts.