Weather Alerts For Johnston, SC

Pollen Index: 8 Pollen Level: medium-high Predominant Pollen: Birch, Hickory/Pecan and Walnut. The amount of pollen in the air for Saturday will be falling in the moderate range. Since the weather has a major influence on pollen dispersal, this decrease is due in part to falling temperatures, rising humidity, and expected precipitation in the afternoon and evening which tends to wash pollen out of the air. With this amount of reduction in pollen levels, tomorrow should be better for allergy sufferers.