OH
Ohio Pollen Reports
Ohio experiences a humid continental climate with hot, humid summers and cold, snowy winters.
No active PollyMap Partner in Ohio yet
We're seeking a pollen partner in Ohio.
PollyMap doesn't publish cheap forecast estimates — the kind that guess what might be in the air and are often wrong by the time you read them. Every report on PollyMap is real airborne pollen and mold, captured by a PollyKit air sampler and counted under a microscope by a trained local partner.
We're actively seeking an allergy clinic or qualified collector to become the Official PollyMap Partner for Ohio. Exclusive territory, weekly content, and AI-assisted analysis included.
Pollen patterns across Ohio
Maple, birch, oak, and ash drive the spring tree season. Grass pollen peaks in late May and June, and ragweed dominates from mid-August through the first hard frost.
Ohio pollen calendar
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
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| mold |
Featured cities in Ohio
Don't see your city? PollyMap partners can serve any city in Ohio — request a local report below.
Don't see your city?
We cover every city in Ohio through our partner network. Request a report for your town and we'll route it to the nearest certified allergist.
Latest reports
Frequently asked questions
When is allergy season in Ohio?
Allergy season in Ohio typically runs from late winter through fall. Tree pollen rises first, followed by grass pollen in late spring and early summer, and weed pollen (especially ragweed) in late summer and fall.
What pollen is highest in Ohio?
In Ohio, the highest-pollen species are typically Maple, Oak, Birch in spring, Bluegrass grass in early summer, and Ragweed in fall.
What months are worst for allergies in Ohio?
For most people, April and May (tree pollen) and September (ragweed) are the most difficult months in Ohio, with grass pollen creating a third peak in June.
Does Ohio have mold allergies?
Yes. The region's climate supports both outdoor and indoor mold exposure — particularly Alternaria, Cladosporium. Outdoor mold spore counts often rise after rain and in fall when leaves decay.
How can clinics become PollyMap collection partners?
Qualified allergy clinics, naturopathic offices, universities, and environmental health professionals can apply to host a PollyKit and become an official PollyMap collection partner. Applications are reviewed by the PollyMap team.
Become the lead collection partner for Ohio.
PollyMap is actively seeking allergy clinics and qualified collectors in Ohio.
Apply today