Arizona's Heat Isn't Background to the Overdose Crisis. It's Part of the Mechanism.

Arizona’s overdose deaths run close to double the national rate, and Arizona is the only state where drug deaths still sit above their pandemic-era peak — this while national overdose deaths keep falling, down 12.1% over the twelve months ending February 2026. That much is familiar. What KOLD News 13 in Tucson put together on August 19 is the part almost nobody says out loud: the weather is doing some of the killing.

The Take: In an Arizona August, heat is not a backdrop to using — it is part of the dose.

The Pima County numbers make the case. Fentanyl and methamphetamine together account for 80% of the county’s drug deaths. Of the 36 heat-contributed deaths there this year, nearly half also involved an overdose. Overdose deaths across the state climb 7 to 8% every June, July, and August. Concrete in direct sun gets to nearly 150 degrees — hot enough that a person who nods off on a sidewalk is being cooked while they’re down.

The mechanism is not mysterious, and understanding it changes what you do. Stimulants like meth push the body to run hotter and harder — heart rate up, breathing up, sweating scrambled — while simultaneously dulling the sense that anything is wrong. Tom Langdon Hill, training director at the Certified Community Health Specialists’ Foundation, described exactly that loss of heat perception: people underestimate how overheated they are and stay out in it longer. Opioids do the other half of the damage. They sedate. The impulse that would normally get a person up and moving toward shade, water, or a door — that impulse is the first thing to go.

Put those together and you get a person who would have survived the drugs in October, and would have survived the heat sober, dying in August because both landed at once.

What that means this week, in this state:

Water before use, not after. Dehydration is already underway by the time thirst registers, and stimulants accelerate the loss.

Do not let people use alone outdoors in the afternoon. The buddy rule that harm reduction already teaches for overdose is now also a heat rule.

Learn that overheating and being high look alike. Confusion, hot dry skin, no sweat, stumbling — that reads as intoxication and it is also heat stroke. Get the person into shade, get cool water on the skin and the back of the neck, call for help. Treating it as “just high” is how the 36 becomes 37.

Check the naloxone. Narcan’s label calls for storage at room temperature. A glovebox in Tucson in August is nowhere near room temperature, and heat degrades what is sitting in there. Move it inside, into a bag, anywhere but a parked car. Nobody counts the kits that quietly degraded in a center console.

Arizona spends four months a year with an environmental hazard layered on top of the drug supply, and the state’s response mostly treats those as separate problems handled by separate agencies. They are not separate to the person on the pavement. The sidewalk doesn’t check on anybody. People have to.