Allergies & Pollen Count for Sweet Valley, Pennsylvania
Today's Condition
Discussion
The pollen levels for Thursday will be increasing but will still remain in the low range. Since the weather has a major influence on pollen dispersal, this increase is due in part to drier air.
Allergy Facts
One sometimes finds patches of yellow snow in the forest. These patches are caused when pollen from overhanging trees falls into the snow. Since pollen is a very fine, yellow-colored powder, the snow assumes a yellowish tint.