Visibility reducer is a term used to describe any type of atmospheric phenomenon that reduces visibility. This includes MIST, SMOG, MURK, smaze, HAZE, and FOG. MIST is a collection of tiny water droplets suspended in the air, while SMOG is a combination of smoke and FOG. MURK is a thick, dark FOG, smaze is a combination of smoke and HAZE, and HAZE is a dry, dusty atmosphere. FOG is a cloud of tiny water droplets suspended in the air near the ground. All of these phenomena reduce visibility and are collectively referred to as visibility reducers.