What is Visibility?

Visibility refers to the maximum distance (usually miles or kilometers) at which objects or lights can be discerned. Forecasts of visibility most commonly provide a maximum distance of 10 miles when there is no obstruction. Visibility is reduced by factors like fog, low clouds, precipitation, dust, and air pollution.

What is the Impact of Visibility?

Reduced visibility can significantly impact transportation safety, aviation operations, maritime navigation, and outdoor activities. Visibility data is a key factor in weather advisories and warnings.