What causes poor visibility?

Poor visibility can be caused by a variety of factors, including weather conditions such as fog, rain, snow, or heavy winds, which can obscure sightlines. Additionally, environmental factors like smoke from wildfires, pollution, or dust storms can reduce clarity. Nighttime darkness and inadequate lighting can also contribute to diminished visibility, particularly in unfamiliar areas. Lastly, obstructions like road constructions or debris can hinder clear sight, affecting safety and navigation.