Mist

Mist is a natural phenomenon caused by small droplets of water aerosols suspended in the cold air, usually by condensation. Physically, it is an example of a dispersion, most commonly seen where water vapor in warm, moist air meets sudden cooling, such as in exhaled air in the winter, or when hot sauna steam is suddenly released outside. Mist occurs naturally as part of weather, typically when hum... (Wikipedia)