How Hot Do Parked Cars Get In Arizona's Summer Heat

Arizona can, and does, get above 100 degrees in the summer quite frequently. With that heat comes a serious and often underestimated danger: how quickly a parked car can turn into a life-threatening environment. Many people assume that a few minutes in a vehicle isn't a big deal, but Arizona's summer temperatures can transform a car into an oven faster than most realize.

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A thermometer in the sand with a blue sky in the background — Photo by Immo Wegmann on Unsplash

How Fast a Car Can Reach Extreme Heat

It doesn't take long for a parked car to reach dangerous temperatures. According to the Emergency Information Network, even on a 70- to 80-degree day, a vehicle's interior can exceed 110 degrees within 30 minutes and climb above 120 degrees in under an hour. On a 100-degree Arizona afternoon, interior temperatures can reach roughly 140-150 degrees in an hour.

The air temperature is only one part of the problem. Surfaces exposed to direct sunlight become even hotter. Dashboards, steering wheels, seat belt buckles, and leather or vinyl seats can quickly reach 150 to 170 degrees. That's hot enough to cause minor burns after only a brief touch.

READ: How Often Do Tornadoes Actually Touch Down In Arizona

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Heat Stroke Risks for Children and Pets

Children and animals are more susceptible to heat stroke than adults. The CDC explains that a child's body heats up faster than an adult's and is less efficient at regulating temperature. Pets face similar risks because they can only cool themselves through limited sweating and panting.

Heat exhaustion can develop within minutes and quickly progress into heat stroke, a medical emergency that occurs when body temperature reaches 104 degrees or higher. Since 1995, over 47 children have died of heat stroke in Arizona after being left in hot cars.

Many people believe cracking the windows makes a vehicle safe. Unfortunately, studies show it does little to slow heat buildup. The greenhouse effect created by the vehicle's windows continues to trap heat, allowing interior temperatures to rise to dangerous levels.

A black car parked under a vibrant autumn tree. — Photo by XXWW on Unsplash

The Law

Arizona's one of several states with laws addressing children and pets left unattended in vehicles. Rather than a specific "hot car law," Arizona tackles this through animal cruelty statutes and child abuse laws. In many cases, people who leave children or animals unattended may face a Class 1 misdemeanor or worse.

Arizona also provides legal protection for those who intervene. The "Good Samaritan Laws," Arizona Revised Statute 12-558.02 and House Bill 2494, protect people who use reasonable force to remove a child or pet from a vehicle. However, they must believe the occupant is in danger, contact emergency services, use only the force necessary, and remain with the child or pet until first responders arrive.

blue sky with white clouds during daytime — Photo by Rajiv Bajaj on Unsplash

It gets hot in Arizona, and a parked vehicle can reach deadly temperatures alarmingly fast. When temperatures are in the triple digits, the safest choice is simple: never leave a child or pet unattended in a vehicle, even for a few minutes. A quick stop isn't worth risking a life.