Question 1

When is allergy season worst in Saint Louis, MO?

Accepted Answer

In Saint Louis, allergy season typically peaks with tree pollen in early spring, grass pollen in late spring through summer, and weed pollen (especially ragweed) from late summer into fall. Mold spores rise after wet stretches.

Question 2

Where can I get tested for allergies in Saint Louis?

Accepted Answer

PollyMap is recruiting a verified allergy clinic to serve as the Official Collection Partner for Saint Louis. Until then, search for board-certified allergists in the MO area.

Question 3

How is pollen measured in Saint Louis?

Accepted Answer

PollyMap partners collect airborne particles with a Rotorod-style sampler placed in Saint Louis, then identify and count tree, grass, weed and mold spores under a microscope each week. These are real counts — not modeled forecasts.

Saint Louis Pollen Report

Collection coming soon to Saint Louis

Historical reports

Cities near Saint Louis

Bring real pollen data to Saint Louis.