Conceptualized by GMA Regional TV and GMA News and Public Affairs, the newscast, delivered in Hiligaynon language, covers the significant and comprehensive news reports from Western Visayas, consisting of Panay region (Iloilo, Aklan, Antique, Capiz, and Guimaras) and Negros Occidental (including Bacolod and Sipalay).^[1] It is also the second GMA Regional TV newscast to use the ONE brand, which was first used by One Mindanao. With overall master control from the GMA broadcasting complex in Iloilo City, it is anchored in a currently dual-presenter format from separate locations, with a presenter each based respectively in GMA's regional studios in Iloilo City and Bacolod City.

One Western Visayas is also aired via satellite through relay stations GMA TV-10 Sipalay, TV-30 Kanladog/Murcia, TV-5 Roxas and TV-2 Kalibo. Also replay on DYSI AM 1323 kHz Super Radyo Iloilo 6:00pm. The program also has its international broadcasts through GMA News TV.

One Western Visayas was also re-aired for national viewers under GTV’s late night block "Regional TV Strip" on a weekly basis. It aired every Wednesday at 11:50 PM from May 20, 2020 to July 21, 2021.^[2]

Launched on August 27, 2018, the newscast marks the return of GMA Iloilo as an originating station, almost three years after it was reduced to be a relay station of GMA 7 Manila due to mass layoffs and financial difficulties brought about by streamlining of GMA Regional TV's operations.^[3] This is produced by GMA Iloilo and GMA Bacolod stations which, before the initial closure of their news departments, aired separate news programs Ratsada 24 Oras (formerly Ratsada and 24 Oras Western Visayas) and Isyu Subong Negrense, respectively.

On March 18, 2019, GMA Bacolod opened its studio which is now used by the newscast. Prior to the launching of its studio, reports and headlines from Bacolod and the rest of Negros Occidental were aired live from the GMA Bacolod Control Room.^[4]

On May 27, 2019, Atty. Sedfrey Cabaluna (also a then high-ranking officer at Department of Tourism Region VI) temporarily left the newscast.^[5] Despite that, the program still maintained a tri-anchor format when reporters Darylle Marie Sarmiento and Zen Quilantang-Sasa took turns as his replacement.

On July 29, 2019, the newscast unveiled a minor revision of its logo, changing its font color to green, reflecting its co-produced national newscast GMA Regional TV Weekend News (later Regional TV Weekend News, now Regional TV News), which was launched on July 27. It was relaunched on August 12, adopting graphics and studio sets for Iloilo and Bacolod stations similar to its sister regional newscasts Balitang Amianan (now One North Central Luzon) and Balitang Bisdak.^[6] The newscast also opened its doors to audiences every Friday but this was halted in March 2020 due to the COVID-19 pandemic.

Atty. Sedfrey Cabaluna returned to the newscast on March 16, 2020, reuniting with co-anchors Rivilla and Prietos. Sarmiento and Quilantang-Sasa, meanwhile, continued working for the newscast as regional correspondents.^[7]

From June 29 to July 10, 2020, the program expanded its coverage and carried over reports from Central and Eastern Visayas regions owing to GMA Regional TV's decision to temporarily suspend GMA Cebu's operations due to a COVID-19 outbreak in Cebu City. With that, the newscast, in interim, was de facto named GMA Regional TV One Western Visayas-Balitang Bisdak newscast. It was filmed at the GMA Iloilo Broadcasting Complex, with headlines delivered in Filipino language. Cabaluna and Rivilla continued as anchors of the interim newscast, with Bobby Nalzaro of Balitang Bisdak joining in as a co-anchor three days later, temporarily replacing Adrian Prietos. Correspondents from GMA Iloilo and GMA Bacolod delivered their news in Hiligaynon while reporters from GMA Cebu used Cebuano. This incidentally marked a return of a multilingual newscast by the network since the first incarnation of GMA Davao's One Mindanao which used Cebuano and Filipino (which later switched to solely using Cebuano). The interim Visayas-wide newscast ended on July 13, 2020 as GMA Cebu resumed productions of its local programs, including Balitang Bisdak. The program also reverted its overall medium of delivery in the Hiligaynon language with Prietos returning to the newscast as a co-anchor.^[8]

Atty. Sedfrey Cabaluna left the newscast once again on September 24, 2021 to run for politics and was elected as the City Councilor of the Lone District of Iloilo City, and temporarily adopted the two-anchor format together with the other regional newscasts. Co-anchor Juan Manuel Dela Cena joined the anchor team on April 4, 2022 and stayed until June 10 of the same year.^[9] Returning veteran broadcaster and former Ratsada 24 Oras anchorwoman Gerthrode Charlotte Tan joined in the anchor team on September 4, 2023, returning once again to the network after 8 years.

On December 29, 2023, Rivilla and Ashley Liza marked their final appearance.

Present edit

From GMA Iloilo Station

• Gerthrode Charlotte Tan (Main anchor)

From GMA Bacolod Station

• Adrian Prietos (Co-anchor and correspondent)

Former edit

• Atty. Sedfrey Cabaluna (Main Anchor and Senior Desk Manager; Now an Iloilo City Councilor)
• Kaitlene Rivilla (Co-Anchor)
• Juan Manuel Dela Cena (Co-Anchor)

Present edit

• Joecel Huesca (Program Manager)
• Rudje Mar Sucaldito (Supervising Producer)
• Julius Belaca-Ol (Supervising Producer)
• Thessalonia Ordales (Senior Desk Manager)
• Zen Quilantang-Sasa (Iloilo correspondent)
• John Sala (Iloilo correspondent)
• Kim Luden Salinas (Iloilo correspondent and news producer)
• Aileen Pedreso (Bacolod correspondent and news producer)

Former edit

• Darylle Marie Sarmiento (Iloilo correspondent)
• Ashley Liza (Senior Desk Manager)

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