Is it dangerous to keep a fire extinguisher in the car during high summer temperatures?

[JuliaDella]

Whether it is dangerous to keep a fire extinguisher in the car during high summer temperatures depends on local temperature conditions and maintenance. Generally, it will not explode. There are many types of fire extinguishers, and most vehicle-mounted fire extinguishers are dry powder extinguishers. Theoretically, dry powder extinguishers can be stored at temperatures between -20°C and 55°C, so they will not explode when kept in a car under normal conditions. Here are some items you should avoid leaving in the car during summer: Lighters: Small and easy to forget, yet highly dangerous. They contain liquid butane, and exposure to sunlight can increase internal pressure, leading to explosions. Bottled water: If left in a sun-exposed car for a certain period, it can release harmful substances. Continued consumption may not only fail to quench thirst but also affect health and cause discomfort. Glasses: Especially reading glasses, as their convex lenses can focus sunlight, potentially causing a fire. Perfume (in glass bottles): Perfume emits flammable gases when it evaporates. The critical packaging point is 49°C. Tests show that on a summer noon, without any shade, the car temperature can reach 65°C in just 15 minutes of sunlight exposure, which can easily trigger an explosion.

[SanPaislee]

I often keep a fire extinguisher in my car during summer, but it can be really dangerous when the temperature gets too high. Rising temperatures cause the internal pressure of the extinguisher to increase sharply, and exceeding the limit can easily lead to explosions or gas leaks. Once on a scorching day, I returned to my car and found the extinguisher's canister had become hot and soft—fortunately, nothing happened, but I've been more cautious since. Direct sunlight in the car can push temperatures above 60°C, which ordinary fire extinguishers might not withstand. It's advisable to regularly check if the pressure gauge is normal and replace it if expired. If you must keep it in the car, place it in the trunk where it's slightly cooler, or find a shaded spot to avoid direct sunlight. Safety first—don't overlook this detail.

[OGabrielle]

From a professional perspective, I assess that fire extinguishers pose a higher risk in high-temperature vehicle environments. As pressurized containers, a sharp increase in ambient temperature can cause internal expansion and heightened pressure, potentially leading to rupture if the canister can no longer withstand it. During summer, in-car temperatures often soar above 70°C, far exceeding safe thresholds. Dry powder extinguishers are particularly heat-sensitive. I advise vehicle owners to regularly check expiration dates and pressure indicators, and to store them away from direct sunlight. If parking outdoors, it's best to remove the extinguisher from the vehicle or place it in a cool storage area. These small precautions can significantly reduce the likelihood of potential accidents.

[EmilyLynn]

Remember, high temperatures in the car during summer are bad for fire extinguishers! Excessive heat can cause the canister to leak or expand, affecting its usability and even potentially causing minor accidents. I always remind people not to take shortcuts—placing it under the driver's seat or near the dashboard is the most dangerous. Try moving it to a corner of the trunk where it's slightly cooler. Regularly check for any visible damage. Don't overlook these small safety details.