how hot a car can get in the sun

[Cara]

A car parked in the sun on a hot day can reach internal temperatures of 130°F to 200°F (54°C to 93°C) within an hour. The exact temperature depends heavily on the outside air temperature. This rapid heating is due to the greenhouse effect, where solar radiation passes through the windows, heats up the interior surfaces, and gets trapped inside. These temperatures are not just uncomfortable; they are dangerous for people and pets and can damage belongings.

The following table illustrates how quickly interior temperatures can rise based on different ambient temperatures, according to studies from organizations like the National Oceanic and Atmospheric Administration (NOAA).

Outside Air Temperature	Elapsed Time	Estimated Interior Car Temperature
70°F (21°C)	30 minutes	104°F (40°C)
80°F (27°C)	30 minutes	114°F (46°C)
85°F (29°C)	60 minutes	130°F (54°C)
90°F (32°C)	20 minutes	125°F (52°C)
95°F (35°C)	60 minutes	150°F (66°C)
100°F (38°C)	60 minutes	170°F (77°C)

The color of your car plays a significant role. A dark-colored interior with a black exterior can absorb significantly more heat, potentially reaching the upper limits of that range. A light-colored interior and exterior will be cooler but can still become dangerously hot. Dashboard surfaces and steering wheels can exceed 180°F (82°C), hot enough to cause burns. To mitigate this, always use a windshield sun shade, crack your windows slightly if it's safe to do so, and never leave a child, pet, or sensitive items like electronics or medications inside a parked car.

[StKatherine]

It gets dangerously hot, way faster than you'd think. I've gotten into my car after just an hour at the grocery store on an 85-degree day, and it was unbearable. The steering wheel was too hot to touch comfortably. I always crack my windows now, even just an inch. It makes a bigger difference than you'd expect by letting some of that super-heated air escape. A good sunshade for the windshield is a must-have.

[ChristianMarie]

Think of your car as a greenhouse. Sunlight comes through the glass, the seats and dashboard absorb the energy and heat up, and that heat gets trapped inside. On a 90-degree day, the inside of your car can easily hit 130 degrees or more in under an hour. That’s not just about comfort; it can damage your car’s interior, causing plastics to warp and crack over time and fading upholstery. Protecting the interior with window tint or a sunshade is a smart move for preserving your car's value.

[DeJessica]

The numbers are startling. On a sunny 75-degree day, a car's interior can reach 100 degrees in about 25 minutes. The rate of heating is most dramatic in the first 30 minutes. This is a critical safety issue. Each year, children tragically die from heatstroke after being left in vehicles. It's a reminder to always check the back seat, no matter how quick you think your errand will be. A good habit is to put something you need, like your phone or purse, in the back seat as a reminder.

[OColton]

From a practical standpoint, the heat can do a number on things you leave behind. I learned the hard way when a plastic water bottle left in a cupholder warped out of shape. Electronics can be permanently damaged, and certain types of food or medication can become unsafe. If you must leave items in the car, put them in the trunk, out of direct sunlight. The trunk will still get warm, but it doesn't experience the same intense greenhouse effect as the cabin, so it's a slightly safer bet for your stuff.