The flow of a white substance 8 miles down a wash, possibly from a limestone quarry in the Santa Rita Mountains, is under ...

Pima County announces the opening of a new 1.5-mile Chuck Huckelberry Loop segment, enhancing recreational and commuting ...

The National Weather Service has issued flash flood warnings for Pima County that run through 7:30 p.m. Aug. 23. Doppler radar indicated thunderstorms producing heavy rain across the warned area.

TUCSON, Ariz. (KVOA) - We are learning more about a concerning trend of nationwide school threats that has now made its way to Pima County. Multiple local school districts are having to address ...

The Pima County Sheriff’s Department is inviting News 4 Tucson and other media partners to a briefing on Tuesday morning. Sheriff Chris Nanos will provide an update on a recent development in a ...

Pima County has received enough federal funding to continue overseeing the region’s migrant-aid effort “well into” 2025, county officials say. This week the U.S. Department of Homeland ...

The National Weather Service has issued severe thunderstorm warnings for Pima County that run through 5:30 p.m. Aug. 23. A severe thunderstorm was located near Tucson International Airport ...

The loop is now over 137 miles. The majority of the funding for the $4 million project came from Town of Marana impact fees, with $670,000 coming from the Pima Flood Control District.

TUCSON, Ariz. (13 News) - The City of Tucson and Pima County are working together to bring more Green Stormwater Infrastructure (GSI) to Southern Arizona. GSI uses native plants, soil, and more to ...

TUCSON, Ariz. (KGUN) — The Pima County Sheriff’s Department announced they will be ramping up enforcement to stop illegal trespassing in the desert area between Ajo Hwy and Valencia Rd ...