WEEK-TV

WEEK-DT2 is the ABC-affiliated second digital subchannel of WEEK-TV, broadcasting in 720p high definition on virtual and UHF channel 25.2.

WEEK-DT2 was launched on November 15, 2004, as an affiliate of NBC Weather Plus, a 24-hour weather channel that provides local forecasts for certain areas. In December 2008, after NBC Weather Plus shut down, it affiliated with The Local AccuWeather Channel, and continued to do so until it went silent in 2014, thus ending the subchannel's run as a 24/7 weather affiliate.

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.[12] With that, WEEK-DT2 returned to the air as an ABC affiliate. The ABC and CW subchannels were simulcast on WHOI for 60 days following the consolidation.[13] The JSA between WHOI and WEEK, which had been running since March 2009, was terminated on October 1, 2016, at which point WHOI moved its Comet TV affiliation from its 19.3 subchannel to its main 19.1 channel, thereby taking the 19.2 and 19.3 subchannels dark, and WEEK-DT2 became the sole ABC affiliate for the Peoria television market.[14] Originally, WEEK-DT2 carried the "HOI ABC" branding. In October 2017, WEEK-DT2 lengthened its branding to "Heart of Illinois ABC".

WEEK-DT3 is the CW-affiliated third digital subchannel of WEEK-TV, broadcasting in 720p high definition on virtual and UHF channel 25.3. All programming on WEEK-DT3 is received through The CW's programming feed for smaller media markets, The CW Plus, which provides a set schedule of syndicated programming acquired by The CW for broadcast during time periods outside of the network's regular programming hours; however, Quincy Media handles local advertising and promotional services for the subchannel.

WEEK-DT4 is the Ion Television-affiliated fourth digital subchannel of WEEK-TV, broadcasting in 16:9 widescreen standard definition on virtual and UHF channel 25.4.

The station's digital signal is multiplexed:

On June 5, 2006, WEEK-TV established a news share agreement with WAOE. The arrangement resulted in this station debuting a weeknight-only prime time newscast on the then-UPN affiliate. Known as Primetime News at Nine (later known as News 25 at Nine on My59), the show could be seen for thirty minutes and offered competition to another weeknight half-hour production airing at the same time on WYZZ (produced by CBS affiliate WMBD-TV). WYZZ once aired a weekend edition of its newscast but this was dropped at some point in time. WAOE also provided a simulcast of WEEK-TV's weekday morning show (except for the first thirty-minute portion at 4:30 a.m.). After the JSA expired at the end of 2014, all WEEK-TV newscasts were dropped from WAOE.

In March 2009, after becoming operated by WEEK-TV, WHOI shut down its separate news department and merged it with the NBC outlet. A new secondary set was built at the Springfield Road studios for use by WHOI to produce separate newscasts. That station let go of most of its production and newscast personnel but added four on-air personalities to WEEK-TV's news team—three of whom are still employed by WEEK-TV today. WHOI dropped its own weeknight newscasts at 5 and 6 p.m. for a new show seen at 5:30 p.m. so it would not directly compete with WEEK-TV's own programs in those time slots. Until 2016, WHOI continued to produce a separate weekday morning show (the two anchors for that program did not appear on WEEK-TV) and weeknight newscast at 10 p.m..

For many years on weekends, WEEK-TV and WHOI simulcasted local news but there could have been a delay or pre-emption on one station because of network obligations (most notably sports programming). 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. That would be the case for the next several years. Although not truly high definition, the shows matched the aspect ratio of HD television screens.

On August 1, 2016, beginning with the 5 p.m. newscast, WEEK-TV became the second of the big three stations in the market to begin producing local news in high definition and introduced a new set and graphics package. WEEK-TV's newscasts were also re-branded from the longtime News 25 to 25 News.

In March 2020, due to the COVID-19 pandemic, WEEK-TV expanded its 10 p.m. newscast from 35 minutes to one hour.

From August 1 to September 30, 2016, WEEK-DT2 simulcast WHOI's newscasts as HOI 19 News.

When the JSA between WHOI and WEEK-TV was terminated on October 1, Quincy Media transferred the newscasts from WHOI to the new ABC subchannel. The newscasts were then rebranded as HOI News (the branding that WHOI formerly used for its newscasts). WEEK-TV's main channel had upgraded local news production to high definition two months earlier, but initially, HOI ABC's newcasts carried over the 16:9 enhanced definition widescreen format that had been used by WHOI's news production years after it combined operations with WEEK-TV.

In October 2017, the subchannel upgraded its newscasts to full HD. The newscasts were rebranded as Heart of Illinois ABC News along with a new secondary set, music and graphics package.