PA pollen report
Philadelphia Pollen Report
PollyMap is actively seeking a qualified local collection partner in Philadelphia. This guide uses regional climate and historical allergen data while we recruit a local host.
Collection coming soon to Philadelphia
PollyMap is actively recruiting a verified local partner in Philadelphia. Be the first to know — or apply to be the partner.
Pollen patterns in Philadelphia
In Philadelphia, tree pollen — including Birch, Oak, Maple — typically dominates from late winter through spring. Timothy grass is the most common warm-season pollinator, and Ragweed drives the largest fall pollen load.
Top trees
- Birch
- Oak
- Maple
- Beech
- Ash
Top grasses
- Timothy
- Bluegrass
- Orchard
- Rye
Top weeds
- Ragweed
- Plantain
- Pigweed
- Lamb's quarters
Top molds
- Alternaria
- Cladosporium
- Aspergillus
- Penicillium
Philadelphia 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 Philadelphia
Explore pollen activity in nearby cities reported by the PollyMap network.
Frequently asked questions
When is allergy season in Philadelphia?
In Philadelphia, allergy season starts with tree pollen in late winter and early spring, transitions to grass pollen in May and June, and ends with weed pollen — primarily ragweed and sagebrush — from August through October.
What pollen is highest in Philadelphia?
The most prevalent local pollens in Philadelphia include Birch, Oak, Maple in the spring season.
What months are worst for allergies in Philadelphia?
Most Philadelphia allergy sufferers report the worst symptoms during peak tree pollen in March-May and again during ragweed season in September.
Does Philadelphia have mold allergies?
Yes. Philadelphia's climate supports Alternaria and Cladosporium spore exposure, with counts typically peaking in the warm and humid months.
Why are allergies bad in Philadelphia?
Local geography, climate, and seasonal plant cycles all influence allergen load in Philadelphia. The combination of regional vegetation and weather creates predictable spring and fall pollen peaks.
Is there a local pollen collection site in Philadelphia?
Not yet. PollyMap is actively seeking a qualified local allergy clinic or environmental health partner in Philadelphia to host weekly pollen collection.
How can my clinic become a PollyMap partner in Philadelphia?
Clinics in Philadelphia can apply to become the official PollyMap collection partner. Approved partners receive PollyKits weekly, conduct 24-48 hour collections, and mail samples back for microscope analysis.
Bring real pollen data to Philadelphia.
Become the lead PollyMap collection partner in Philadelphia and join our national network.
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