The Pollen Count App

Welcome! Select an option to begin:


See it before you breathe it

Allergy season is rough, but our forecast, featuring each category of pollen producer, is here to show you when pollen levels are high! Quickly visualize today's local pollen, mold, and air quality levels near you to help manage your symptoms and avoid hay fever.



Tree pollen season arrives in the early spring, and can come from over a dozen common tree species. As a general rule, trees with fine, powdery pollen are the worst offenders. Trees in the western United States tend to produce fewer allergens.



Grass pollen is most prevalent from May until July. Bermudagrass, Kentucky Bluegrass and Ryegrass are common lawn grasses that cause allergies. Grasses only produce pollen if they can grow flowers at the top, so if you can keep your lawn mowed, that will decrease the production of pollen.



Ragweed pollen typically files from August through October, and is the most common trigger for hay fever, also known as allergic rhinitis. Ragweeds grow in every U.S. state except Alaska, but are most common in the East and Midwest.



Airborne mold spores can cause allergic reactions when inhaled. Spores are microscopic particles that form as mold reproduces, and can easily travel through the air. Mold can be present year-round, but symptoms are most common from July into the early fall.

Just the data

See the actual numbers. No abstract allergy indexes, no obnoxious ads—just the details you are looking for, packaged up in human-readable form.