How Hot Do Cars Get?

“Have you ever noticed how hot it can get inside a car on a summer day — far hotter than it is outside?
That’s because a car acts like a greenhouse, trapping the sun’s heat.”

Have you ever noticed how hot it can get inside a car on a summer day — far hotter than it is outside? That’s because a car acts like a greenhouse, trapping the sun’s heat.

A study by the Animal Protection Institute showed that even moderately warm temperatures outside can quickly lead to deadly temperatures inside a closed car.

The study, conducted during a local heat wave, compared an outside temperature of a shaded area with the inside of an automobile in three states: fully closed, with four windows cracked, and with two windows cracked. Inside temperatures were measured with an indoor/outdoor thermometer and an oven thermometer (both readings are given). All temperatures use the Fahrenheit scale.