Mist is a phenomenon that consists of small droplets of water suspended in air. Mist occurs as part of a natural weather event or from volcanic activity. Mist is most common in cold air above warm water. Mist also occurs when air is exhaled in cold temperatures or when steam is formed in a sauna. Aerosol cans can create artificial mist if the humidity levels are just right.

The one difference between mist and fog is visibility. If visibility is less than 0.62 miles (1 kilometer), the condition is known as fog. Otherwise it is known as mist. Mist has a bluish-gray coloration when seen from a distance. Light is refracted and reflected more in mist than in normal air due to the suspended water droplets. Although mist is most common near shorelines, it can also occur as high as mountain tops when the extreme temperatures are low.

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