OH pollen report
Toledo Pollen Report
Toledo sits where the Maumee River meets Lake Erie — flat, fertile former lake-bottom land that grows grass and ragweed as well as anything in Ohio. Oak and maple bury the city each spring, grasses carry the summer, and ragweed fills the region's field edges every fall. Lake humidity keeps the growing season lush and the mold season long.
Collection coming soon to Toledo
PollyMap is actively recruiting a verified local partner in Toledo. 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 Toledo
No allergy clinic is reporting from Toledo 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 Toledo
Trees: oak, maple, and cottonwood (April – June)
Oak (Quercus) and maple dominate, with cottonwoods along the Maumee adding a fluffy May finale. May is the peak.
Grasses: bluegrass and Timothy (May – August)
Lawn and farm grasses across northwest Ohio pollinate heavily in June.
Weeds: ragweed (August – frost)
Ragweed (Ambrosia) thrives in the region's farmland, with counts elevated until the first frost.
Mold: lake and river humidity
Lake Erie and Maumee corridor moisture keeps Alternaria and Cladosporium active through summer and into the leafy fall.
Pollen patterns in Toledo
In Toledo, 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
Toledo 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 Toledo
Explore pollen activity in nearby cities reported by the PollyMap network.
Frequently asked questions
What is the pollen count in Toledo today?
PollyMap publishes real, microscope-verified pollen counts for Toledo — 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 Toledo right now?
Toledo's worst stretches are May (oak, maple), June (grasses), and September (ragweed). The measured reports on this page show today's actual levels.
When is allergy season in Toledo?
April through the first hard frost: trees in late spring, grasses in summer, ragweed in the fall, and mold through the humid months.
Does living near Lake Erie help allergies in Toledo?
Not much — lake moisture feeds lush vegetation and humidity, extending grass and mold seasons along the western shore.
Are you an allergy clinic in Toledo? 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 Toledo, 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 Toledo metro — like a franchise territory. Toledo has room for multiple partners, but once your area is assigned, it's locked to your clinic.
No clinic has claimed a territory in Toledo 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.
Toledo, Sylvania, Maumee, and Perrysburg each make natural PollyMap territories. The first allergy clinic in each area becomes its credited pollen expert.
- Your clinic credited on every Toledo 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 Toledo
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