Hot Car Safety: Why Children Should Never Be Left in Vehicles

Las Vegas Heat and the Hidden Danger Inside Parked Cars

Early summer in Las Vegas means temperatures regularly soar above 100°F, and the desert sun can transform a parked vehicle into a deadly environment in a matter of minutes. According to the National Highway Traffic Safety Administration (NHTSA), a car’s interior temperature can rise nearly 20°F in just 10 minutes — even with the windows cracked. On a 100°F day, the inside of a vehicle can exceed 140°F in under an hour.

For children, this rapid heat buildup is especially dangerous. The American Academy of Pediatrics (AAP) notes that a child’s body heats up three to five times faster than an adult’s. Their temperature regulation systems are still developing, which means they are far more vulnerable to heatstroke — a condition that can become life-threatening when the body’s core temperature reaches 104°F and fatal at 107°F.

Why This Matters More in Las Vegas

While hot car tragedies can happen anywhere, our Las Vegas desert climate intensifies the risk. Summers here routinely bring stretches of extreme heat, with ambient temperatures that can push well past 110°F. At those temperatures, a vehicle’s cabin can reach dangerous levels in as few as five minutes. Local first responders and national weather agencies consistently highlight the Las Vegas valley as one of the areas where vigilance around hot car safety is most critical during the summer months.

It is also important to understand that mild or partly cloudy days are not safe exceptions. According to the CDC, vehicles can heat up to dangerous temperatures even when the outside air feels moderate. Cars act as greenhouses, trapping solar radiation regardless of whether the day feels particularly hot.

How Hot Car Emergencies Happen

Research published in pediatric safety literature suggests that most hot car incidents are not the result of intentional neglect. They often involve disruptions to a caregiver’s routine — such as a change in the usual drop-off schedule — or situations where a child gains unsupervised access to an unlocked vehicle. Understanding these patterns can help every family build habits that reduce risk.

Key Risk Factors to Be Aware Of

• Changes in routine: A different parent handling drop-off, running an unusual errand, or taking an unfamiliar route can disrupt awareness.
• Sleeping children: A quiet, sleeping infant or toddler in a rear-facing car seat may be easy to overlook, especially during a busy morning.
• Unlocked vehicles: Young children may climb into an unlocked car while playing outdoors and become trapped.

Actionable Prevention Tips for Every Family

The AAP and NHTSA recommend several evidence-based strategies to help prevent hot car tragedies:

Build a “Look Before You Lock” Habit

• Place an essential item — such as your phone, bag, or shoe — in the back seat next to your child’s car seat every trip. This creates a physical reminder to check the rear seat before walking away.
• Make it a routine to open the back door and visually confirm the back seat is empty every time you park, even when you believe you are traveling alone.

Use Technology and Reminders

• Set a calendar alert or phone alarm for your usual drop-off time as a backup reminder.
• Ask your childcare provider to call you if your child does not arrive as expected. Many programs offer check-in notification systems — consider enrolling in one.

Secure Your Vehicle

• Always lock your car when it is parked at home or in a driveway, and keep keys out of children’s reach. This can help prevent children from climbing inside unattended.
• Teach older children that cars are never a safe place to play, even when the engine is off.

Know What to Do in an Emergency

• If you ever see a child alone in a vehicle, the NHTSA advises calling 911 immediately. If the child appears in distress — flushed skin, unresponsive, or not moving — local authorities recommend taking action to remove the child from the vehicle and moving them to a cool environment while waiting for emergency responders.

Age-Specific Considerations

Newborns and infants are at the highest physiological risk because their bodies have the least developed thermoregulation. Rear-facing car seats, while essential for crash safety, can also make it harder for a driver to notice a small, quiet baby. The “essential item in the back seat” strategy is especially important for families with infants.

Toddlers and preschoolers are naturally curious and may open car doors or climb into vehicles during outdoor play. Keeping vehicles locked at all times — even in your own garage — is a key prevention step for this age group.

School-age children and adolescents can benefit from direct conversations about car safety. According to the AAP, age-appropriate discussions about the dangers of playing in or around parked cars can help older children understand why these rules matter.

A Community Responsibility

Hot car safety is not just a family matter — it is a community effort. Neighbors, bystanders, and coworkers all play a role. If you see a child alone in a parked car in the Las Vegas heat, do not hesitate to act and call for help. Awareness and willingness to intervene can save lives.

As temperatures continue to rise this June and throughout the summer, we encourage every family in the Las Vegas valley to review their routines, talk with all caregivers — including grandparents, babysitters, and older siblings — and commit to making “Look Before You Lock” an automatic habit.

If you have questions or concerns about your child’s health, contact Sunrise Pediatrics to schedule an appointment. Our team is here to provide personalized guidance for your family.

Featured photo by Moises Alex on Unsplash