WEEK-TV (channel 25) is a television station licensed to Peoria, Illinois, United States, affiliated with NBC, ABC, MyNetworkTV, and The CW Plus.

The station moved to channel 25 in 1964 and had several owners, including Kansas City Southern Industries, Price Communications, and Granite Broadcasting Corporation.

The arrangements were ended in 2016, when then-owner Quincy Newspapers bought the ABC and CW affiliations from Sinclair and moved them onto a subchannel of WEEK.

Edward K. Gaylord was president, and the chairman of the board was United States Senator, former governor of Oklahoma and founder of the Kerr-McGee Corporation Robert S. Kerr.

Wayne Lovely, the first chief engineer of WEEK-AM-TV, supervised the construction of the stations' technical facilities and equipment installation in 1953.

On October 31, 1988, WEEK-TV and fellow NBC outlet KBJR-TV of Superior, Wisconsin, became the two founding stations of the Granite Broadcasting Corporation.

[4] On March 2, 2009, WEEK-TV took over operations of rival WHOI, then owned by Barrington Broadcasting, through joint sales and shared services agreements.

This resulted in WHOI closing its longtime studios on North Stewart Street in Creve Coeur and sharing WEEK-TV's East Peoria facility.

[6] On February 11, 2014, Quincy-based Quincy Newspapers announced it would acquire WEEK-TV; KBJR-TV; WBNG-TV in Binghamton, New York; and Malara Broadcasting-owned WPTA in Fort Wayne, Indiana, from Granite Broadcasting.

On September 30, 2015, the FCC approved Quincy's purchase of WEEK, and the sale was completed on November 2, nearly two years after the agreement was announced.

For a time, the facility also hosted some internal operations (e.g. programming log maintenance) for WBQD-LP, another Four Seasons-owned MyNetworkTV outlet (now WQAD-DT3).

[9] The acquisition was completed on August 2, 2021,[10] bringing WEEK-TV under common ownership with several Gray Television stations in nearby midwestern markets.

On July 26, 2016, Quincy Media announced that it had acquired WHOI's ABC and CW affiliations from Sinclair, and would consolidate them onto subchannels of WEEK beginning August 1, 2016.

[11] As an aspect of this deal, Quincy-owned WSJV in South Bend similarly relinquished its Fox affiliation to Sinclair-owned WSBT-TV.

At some point after combining operations, the two outlets became the first news department in the market to upgrade local newscast production to 16:9 enhanced definition widescreen.