When will the fog rise and disperse?

Fog usually begins in the morning of a day, and the duration of fog dissipation is mainly related to the humidity of the local climate: generally speaking, many fogs in arid areas dissipate within 1 hour, while long fogs in humid areas are the most common, lasting about 6 hours.

When the relative humidity reaches 100%, the water vapor in the air will condense into fine water droplets suspended in the air, which will reduce the visibility on the ground. This weather phenomenon is fog. Most of them appear between February and April in spring. ?

Conditions for fog formation: cooling, humidifying and increasing water vapor content. There are radiation fog, advection fog, mixed fog and evaporation fog.

Extended data:

When the water vapor contained in the air reaches the maximum, it reaches saturation. The higher the air temperature, the more water vapor it contains. 1 m3 air, the maximum water vapor capacity is 6.36g at 4℃; When the temperature is 20℃, the maximum water vapor content in 1 m3 air is17.30g.

If the air contains more water vapor than saturated water vapor at a certain temperature, the excess water vapor will condense out. When enough water molecules combine with tiny dust particles in the air, the water molecules themselves will combine with each other and become small water droplets or ice crystals.

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