Arizona Summer Heat Is Deadly — Here's How to Stay Safe
Arizona summers are no joke. Temperatures regularly exceed 110°F across Maricopa and Pinal Counties, and the heat doesn't care how healthy you are or how short your errand will be. Heat-related illnesses like heat exhaustion and heat stroke claim lives every summer — and most of those deaths are preventable.
Rural Metro Fire responds to hundreds of heat emergencies each season. Here's what you need to know before the next heat wave hits.
Hot Cars Kill — Faster Than You Think
On a mild 70°F day, the inside of a parked car can reach 110°F in just one hour. In Arizona's summer heat, that same car can hit 120°F or more in under 30 minutes.
Children, elderly adults, and people with disabilities are the most at risk because their bodies struggle to regulate temperature. Arizona consistently ranks among the highest states in the country for hot car deaths.
- Never leave anyone — including pets — in a parked car, even with windows cracked or "just for a minute"
- Put your phone or wallet in the back seat as a reminder if you travel with young children
- If you see a child or vulnerable adult alone in a hot vehicle, call 911 immediately
Hiking in the Heat Can Turn Dangerous Quickly
Arizona's trails are beautiful, but summer hiking without preparation can lead to serious trouble. Low humidity and intense sun pull moisture from your body faster than you realize — and dehydration can set in before you feel thirsty.
Before you hit the trail:
- Hike early morning or late evening, never during peak afternoon heat
- Bring at least 1 liter of water per hour of hiking, plus electrolytes
- Wear lightweight, light-colored clothing, a wide-brimmed hat, sunglasses, and sunscreen
- Tell someone your plans and your expected return time
- Turn back at the first sign of dizziness, nausea, or unusual fatigue
Outdoor Workers Face the Highest Risk
Construction crews, landscapers, roofers, and other outdoor workers are exposed to Arizona's radiant heat for hours at a time. Knowing the warning signs of heat illness can save a life.
Heat exhaustion symptoms include heavy sweating, weakness, dizziness, nausea, headache, and muscle cramps. If you or a coworker show these signs, get to a cool area and hydrate immediately.
Heat stroke is a medical emergency. Signs include hot, dry skin, confusion, rapid pulse, and body temperature over 103°F. Call 911 right away, move the person to a cool area, and apply cool water or ice packs to the neck, armpits, and groin while you wait for help.
For prevention: take regular shade breaks, drink water consistently throughout the day, and watch out for one another.
Check on Your Neighbors — Especially the Vulnerable
Children, elderly adults, and people with disabilities can suffer heat-related illness faster and with fewer obvious warning signs. During a heat wave, a quick check-in can make all the difference.
- Call or visit neighbors, family, and friends who live alone
- Make sure air conditioning is working — if not, encourage visits to a cooling center like a library, mall, or community center
- Limit outdoor time between 10 AM and 4 PM for those at higher risk
- Don't assume someone is fine because they look okay — confusion or unusual sleepiness in the heat is a red flag
Share this post with your family, neighbors, and coworkers. A little preparation goes a long way. And remember — if someone is showing signs of heat stroke, don't wait. Call 911. Follow Rural Metro Fire on social media for more summer safety tips and updates.
