Excessive Heat — Tucson Metro Area, Arizona

2025-08-07 · Tucson Metro Area, Arizona

Event narrative

High temperatures in Southeastern Arizona were 13 degrees above normal, causing Extreme HeatRisk. The Tucson International Airport reached a high temperature of 113 degrees Fahrenheit and was the hottest temperature reached in 2025. The Pima County Medical Examiner found that heat was the primary factor in the cause of death for two individuals, one in Tucson and one in Marana.

Wider weather episode

Temperatures in Southeastern Arizona were near 6 to 13 degrees above normal with Major to Extreme HeatRisk. The Pima County Medical Examiner found that heat was a factor in the cause of death for 9 individuals. Heat was the primary factor for three people and six were heat contributed. An Extreme Heat Warning was in effect for all the lower elevations in Southeastern Arizona and tied the hottest high temperatures of 2025.

Source: NOAA Storm Events Database, event_id 1290880. Narrative written by the NWS forecast office that issued the report.