Wind chill describes how cold it feels when wind strips away the thin layer of warm air protecting your skin. This "feels-like" temperature can make body heat escape faster, increasing risks of frostbite and hypothermia. Frostbite can damage fingers, toes, ears, and nose, while hypothermia lowers core body temperature dangerously. To stay safe, cover exposed skin, dress in layers, stay dry, avoid alcohol and caffeine, keep moving, and check on vulnerable individuals. Extreme wind chills can become life-threatening within minutes.