Pollen Forecast for Pittsburgh, Pennsylvania

Pollen concentrations for Tuesday will be falling but will remain in the very high range. Since the weather has a major influence on pollen dispersal, this decrease is due in part to rising humidity and expected precipitation in the evening which tends to wash pollen out of the air.

Based on past pollen counts and expected weather conditions, pollen levels for Wednesday will be falling but will remain in the high range. This lowering of pollen concentrations is a result of falling temperatures, lack of strong winds and expected precipitation in the morning and evening which tends to wash pollen out of the air.