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Allergies & Pollen for O'Fallon, Missouri

1.3
Low
Top Allergens:
Grass, Walnut, Mulberry
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Discussion

Pollen concentrations for Saturday will be on the increase in the moderate range. The cause for the rising pollen levels is higher temperatures and the lower dewpoint. The increase of this magnitude could make it more difficult for those with allergies.

Allergy Facts

Those with allergies to mugwort, a plant in the Aster family, may also find allergic problems with celery, carrot, nuts, spices, and mustard.