Plant pollination occurs every spring, summer, and fall. The pollen grains released by trees, grasses, and weeds cause illness and suffering in over 40 million Americans. Pollen forecasts measure the amount and types of pollen present in the air, providing allergy sufferers the knowledge of when to avoid being outside.
Learn more about pollen forecasts in this article.
Tue, Aug 25, 2009
Allergens, Allergy Symptoms, Seasonal Allergies