This interactive tool provides geographical listings of allergenic grasses, trees, and weeds, including information about insect-pollinated and cross-reactive species.

Each major city and most minor cities in nearly every state* are featured—including the territories of Puerto Rico and the U.S. Virgin Islands.

In addition, you will find downloadable botanical profiles for a variety of allergenic plants. These botanical profiles provide information about genus, species, and family, as well as distribution throughout the United States.

Click on your state to get airborne allergen information specific to your region.

*Allergen information provided for all states except Arizona.

Back to top