Pollen Forecast for Willow Grove, Pennsylvania
High
Oak, Birch, Maple
Discussion
The pollen levels for Sunday will be increasing over today's levels and extend even further into the extremely high range. The cause for the rising pollen levels is strong winds and decreasing humidity.
Allergy Facts
The grass family is probably the most important plant family in the world. Grasses are used extensively in landscaping urban and suburban areas, are the providers of almost all cereal crops, and are the principal providers of sugar. Domesticated and wild animals graze on grasses. Furthermore, grasses provide building materials in much of the world (thatch, bamboo, etc.), and millions -- probably billions -- of dollars are spent to treat allergies caused by grass pollen.