OH pollen report
Columbus Pollen Report
Columbus sits in the Scioto and Olentangy river valleys in the heart of Ohio — classic Midwest allergy country. Oak and maple drive a strong spring season, lawn grasses carry the summer, and Central Ohio is deep in ragweed territory come fall. Humid valley air keeps mold spores active through every warm, wet stretch.
Collection coming soon to Columbus
PollyMap is actively recruiting a verified local partner in Columbus. Be the first to know — or apply to be the partner.
While we find a local clinic
Test the air at your own home in Columbus
No allergy clinic is reporting from Columbus 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.
What drives allergies in Columbus
Trees: oak, maple, and elm (March – May)
Oaks (Quercus) are Columbus's biggest spring trigger, with maple, elm, and ash contributing. April is typically the roughest month.
Grasses: fescue and bluegrass (May – July)
Lawn grasses pollinate heavily in June across the metro, overlapping with the tail of tree pollen and rising mold.
Weeds: ragweed (August – frost)
Ragweed (Ambrosia) thrives along the region's field edges, riverbanks, and construction corridors — and in a fast-growing metro, disturbed soil is everywhere. Counts stay high until a hard frost.
Mold: humid summers, damp falls
River-valley humidity feeds Alternaria and Cladosporium all summer, with spikes after storms and during autumn leaf drop.
Pollen patterns in Columbus
In Columbus, tree pollen — including Maple, Oak, Birch — typically dominates from late winter through spring. Bluegrass grass is the most common warm-season pollinator, and Ragweed drives the largest fall pollen load.
Top trees
- Maple
- Oak
- Birch
- Ash
- Walnut
Top grasses
- Bluegrass
- Timothy
- Orchard
- Rye
Top weeds
- Ragweed
- Lamb's quarters
- Pigweed
- Plantain
Top molds
- Alternaria
- Cladosporium
- Aspergillus
- Penicillium
Columbus pollen calendar
Typical monthly intensity across the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| tree | ||||||||||||
| grass | ||||||||||||
| weed | ||||||||||||
| mold |
Historical reports
Cities near Columbus
Explore pollen activity in nearby cities reported by the PollyMap network.
Frequently asked questions
What is the pollen count in Columbus today?
PollyMap publishes real, microscope-verified pollen counts for Columbus — measured from physical air samples. The latest report on this page shows current tree, grass, weed, and mold levels.
Is the pollen count high in Columbus right now?
Columbus's worst stretches are April (oak), June (grasses), and September (ragweed). The measured reports on this page show today's actual levels.
When is allergy season in Columbus?
March through the first hard frost: trees in spring, grasses in early summer, ragweed from August onward, and mold through the humid months.
Why is fall so bad for allergies in Columbus?
Central Ohio is prime ragweed habitat, and the metro's constant growth means endless disturbed soil where ragweed thrives. September counts are reliably heavy.
Are you an allergy clinic in Columbus? Claim your territory on PollyMap.
PollyMap is a local authority-building tool for allergy clinics, ENT practices, and any clinic that offers allergy care. By becoming the Official PollyMap Partner for your part of Columbus, your clinic gets credited on real pollen reports, receives ready-to-share weekly content, and becomes the go-to local expert patients trust.
We assign each partner a designated territory within the Columbus metro — like a franchise territory. Columbus has room for multiple partners, but once your area is assigned, it's locked to your clinic.
No clinic has claimed a territory in Columbus yet. The best areas go to the first clinics that sign up — once one does, that part of town is off the table for everyone else.
Columbus, Dublin, Westerville, Grove City, and Delaware each make natural PollyMap territories. The first allergy clinic in each area becomes its credited pollen expert.
- Your clinic credited on every Columbus pollen report
- Weekly real-sample reports and ready-to-share content under your brand
- Locked territory — competing clinics can't claim your area
- Become the go-to allergy expert in your part of Columbus
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