MO · Allergy Season Guide
Saint Louis Allergy Season Guide
Saint Louis, MO allergy season guide with local pollen calendar, mold patterns, and PollyMap collection status.
PollyMap is actively looking for a qualified local partner in Saint Louis.
We're recruiting a qualified local allergy clinic — or any clinic that provides allergy care — to become the official pollen collection partner for Saint Louis.
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Test the air at your own home in Saint Louis
No allergy clinic is reporting from Saint Louis yet. Until one does, you can order your own PollyKit — a simple air sampler you hang outdoors or indoors. Send it back and the PollyKit Lab shows you exactly what's floating in your air.
- Pollen from local trees, grasses and weeds
- Airborne mold spores
- Dust mites and other indoor allergens
Hang it outdoors
See which pollen and mold are in your yard this season.
Or hang it indoors
Check bedrooms and living spaces for mold, dust mites and more.
Summary
PollyMap does not yet have weekly collected pollen data for Saint Louis. This guide is based on regional climate patterns and historical allergen data while we recruit a local collection partner. Tree pollen peaks in spring, grass pollen in late spring and early summer, and weed pollen in late summer and fall.
Local allergy guide for Saint Louis
Local weather — temperature, rainfall, wind, and humidity — drives day-to-day pollen levels. Dry, windy days following warm weather typically produce the highest counts, while heavy rain temporarily clears the air.
Saint Louis monthly allergy calendar
Typical month-by-month intensity for the four major airborne allergen categories in Saint Louis.
Frequently asked questions about allergies in Saint Louis
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Missouri Allergy Season Guide
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Independence Allergy Season Guide
Library
Pollen species library
Library
Mold species library
Reports
Latest PollyMap reports
Partners
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