Fog is a sprinkler that is floating above the ground is low that clouds sometimes is considered to be part of the fog. The clouds that moved in the air a high level will no longer be considered as fog.While the clouds moving from the exposure to the ground. A building or buildings at the height of a human one, it will be considered more than a cloud of mist, which unlike aerosol fog fog (mist), only the density only. The effect of fog that apparently is making the visibility decreased. Regular fog may reduce visibility less than 1 km. best aerosol mist reduces visibility to within 1 – 2 km.