The reason it's always cold on planes, according to a flight attendant: It's for your safety

If you travel by plane frequently, you've probably noticed that the temperature inside the cabin is usually quite cold. But while we might think it has to do with weather, it's actually related to safety.

Jay Robert , an international cabin crew member and creator of the website A Fly Guy's Cabin Crew Lounge , shares the reason for the low cabin temperature, as reported by the Mirror .

According to Robert, cold air isn't necessarily bad and could actually improve the flight experience. "When the plane is at the gate, it's cooled by an external air conditioning system. Once in the air, the aircraft uses its internal cooling system, powered by the engines," he says.

Robert goes on to explain that flight attendants have limited ability to adjust the aircraft's thermostat through the cockpit control system. In reality, the pilots are in charge of the main thermostat, and any significant temperature changes are their decision.

The professional explains that low temperatures should not be avoided, as they can be beneficial to the health and safety of passengers. Recalling working on a large aircraft with more than 600 passengers on board, Robert says he had to regularly check that the temperature did not exceed 23°C.

The problem is that passengers are more likely to faint if the temperature rises above 24°C. Furthermore, the cooler air helps counteract the effects of the dry, pressurized cabin environment, which can contribute to dehydration and motion sickness.

Fresh air on airplanes also has an added benefit: a pleasantly fragrant cabin. According to Jay Robert, warmer cabins smell worse because the heat activates odor-causing molecules, accelerating their buildup.