how hot can a car get in the sun celsius

[ReidLynn]

A car parked in the sun on a hot day can reach internal temperatures of 60-82°C (140-180°F) or even higher. The exact temperature depends on the outside air temperature, the intensity of the sun, and how long the vehicle is left. On a typical 35°C (95°F) day, the inside of a car can become dangerously hot within minutes, posing significant risks to health and safety.

This rapid heating occurs due to the greenhouse effect. Shortwave solar radiation passes through the windows and is absorbed by the dashboard, seats, and interior surfaces. These surfaces then re-radiate the energy as longwave heat, which cannot easily escape through the glass, causing the cabin temperature to skyrocket.

The rate of heating is most extreme within the first 15-30 minutes. Studies from institutions like the American Academy of Pediatrics have shown that even on milder days, the temperature inside a car can become 20°F (11°C) hotter than the outside temperature within 10 minutes. The following table illustrates how quickly temperatures can rise on a 90°F (32°C) day:

Elapsed Time	Interior Cabin Temperature (Approx.)
0 minutes	32°C (90°F)
10 minutes	43°C (110°F)
20 minutes	49°C (120°F)
30 minutes	54°C (130°F)
60 minutes	65°C (150°F)

This extreme heat can damage your car's electronics, crack the dashboard, and cause plastic components to warp. More importantly, it is lethal for children and pets. It is crucial to never leave a living thing in a parked car, even for a short time with the windows cracked open, as this provides minimal cooling effect. Always check the back seat and use sunshades to help mitigate the temperature rise.

[StCharlie]

I left my phone on the seat once and the screen literally warned me it was overheating. I’ve seen thermometers hit 150°F (65°C) in my own car on a summer afternoon. The steering wheel becomes too hot to touch. It’s not just uncomfortable; it’s a real hazard. I always crack the windows and use a reflective windshield shade now. It doesn’t solve the problem, but it takes the edge off.

[VonRosalie]

The science behind it is straightforward: the greenhouse effect. Sunlight enters through the glass, the interior materials absorb the energy and heat up, and that trapped thermal radiation has a hard time escaping. This is why the temperature can climb so rapidly, often reaching 70°C (158°F) or more. The color of the car's interior is a major factor; a black dashboard will get significantly hotter than a light-colored one.

[Roxanne]

As a parent, this is one of my biggest fears. We all think it won't happen to us, but the stats are scary. A car can become an oven in minutes, not hours. I make it a habit to always put my purse or work bag in the back seat next to my child’s car seat. That way, I have to turn around before I leave the car. It’s a simple trick that could save a life.

[StellaFitz]

Beyond the safety risks, that kind of heat, consistently hitting 65°C (150°F), is brutal on your car’s interior. The UV radiation and extreme temperatures will fade and crack your dashboard and leather seats over time. Your electronics and battery are under more stress too. Using a high-quality sunshade is a must. I also recommend applying a UV-protectant spray to your interior surfaces a few times a year to help preserve them.