Highlights
- Maricopa County's Medical Examiner reported 150 confirmed heat-related deaths in 2026, with 629 additional deaths under investigation.
- Yuma County's 26 heat-related deaths this year have already exceeded the 19 recorded in all of 2025.
- Yuma Fire Department responded to 65 heat-related emergency calls in August alone, deploying intensive cooling therapy for 11 patients.
- Yuma County's roughly 20 cooling stations, originally set to close in September, will stay open into October if extreme temperatures persist.
Arizona's late-season heat wave is on pace to make 2026 the deadliest summer on record in the state, with Maricopa County's Medical Examiner reporting 150 confirmed heat-related deaths and an additional 629 deaths under investigation as of Tuesday. The figures, corroborated by Maricopa County's own heat surveillance dashboard and reporting from 12News and KJZZ, represent a surge that public health officials say is still accelerating.
To the southwest, Yuma County has recorded 26 heat-related deaths so far this year, a figure that has already eclipsed the 19 heat-related deaths recorded in Yuma County in all of 2025, with weeks of high temperatures still ahead. A post-Labor Day extreme heat warning has kept conditions dangerous across the region.
On the ground, the Yuma Fire Department fielded 65 heat-related emergency calls in August alone. For 11 of those patients, crews deployed intensive cooling therapy using specialized cold packs and body bags packed with ice to rapidly lower core body temperature. The department has responded to 78 heat-related emergency calls so far this year.
Francisco Leon of the Yuma Fire Department said peak danger runs through the midday hours. "Usually, anywhere from 10 a.m. to 3 or 4 p.m. is when it gets the hottest," Leon said. "So that may be the time when we see man-downs or welfare checks, and people in town just walking around and becoming overheated and they don't really realize it."
Leon identified outdoor laborers, the elderly, and the unsheltered as the populations at greatest risk, and warned that many victims do not recognize dangerous dehydration until they are already in medical distress. He urged residents to check on elderly neighbors and cautioned against leaving children or pets in unattended vehicles.
Yuma County currently operates approximately 20 cooling stations. County officials say the stations will remain open into October if the extreme temperatures persist.
Sources
Every factual claim in this article traces to one of the sources below. See how we work for the editorial process.
- AZ Family (3TV/CBS5) retrieved 09/09/2026 00:24
- Maricopa County retrieved 09/09/2026 00:24
- 12News retrieved 09/09/2026 00:24
- kjzz.org retrieved 09/09/2026 00:24
Authored by The Scottsdale Signal. Drafted by AI from primary-source material under our beat-specific editorial guides; reviewed by humans before publish under our five-gate process. Sources retrieved at 09/09/2026 00:24. Every claim traces to a source.
