January 6 – The Department of Health and Human Services announces it is halting $10 billion in social service programs to Colorado and four other Democratic states.
February
February 13 – Four people are killed in a small plane crash near Steamboat Springs.
February 17 – Five people are killed in a crash involving over 30 vehicles on Interstate 25 south of Pueblo.
March
March 16 – About 3,800 workers begin a strike at a Swift Beef Co. plant in Greeley.
March 27 – Four of the seven law enforcement officers in Costilla County, as well as a former deputy, are indicted by a grand jury in two unrelated cases. The sheriff and a former deputy are charged with mishandling human remains, allegedly taking only some of the remains reported by a citizen and leaving the others behind in October 2024. In a separate case, the undersheriff, a deputy, and a sergeant, who is also the sheriff's son, are charged with assault for allegedly tasing a man who was undergoing a mental health crisis in February 2026.
April 2 – An appeals court orders a resentencing for election denier and former county clerk Tina Peters, who in 2024 was sentenced to nine years in prison for seven charges related to election interference in the 2020 presidential election.
April 21 – The La Plata County District Attorney's office charges an ICE officer with assault over a 2025 incident in which he was filmed putting a protester in a chokehold.
May
May 5 – The Trump administration sues the city of Denver over its assault weapons ban, which was put in place in 1989.
May 8 – A Frontier Airlines flight strikes a pedestrian at Denver International Airport during takeoff, causing an engine fire and forcing the plane to evacuate. The pedestrian reportedly hopped a fence two minutes prior to their death.
May 15 – Governor Polis commutes the sentence of Tina Peters.
