CT pollen report
New Haven Pollen Report
PollyMap is actively seeking a qualified local collection partner in New Haven. This guide uses regional climate and historical allergen data while we recruit a local host.
Collection coming soon to New Haven
PollyMap is actively recruiting a verified local partner in New Haven. Be the first to know — or apply to be the partner.
Pollen patterns in New Haven
In New Haven, 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
New Haven 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 New Haven
Explore pollen activity in nearby cities reported by the PollyMap network.
Frequently asked questions
When is allergy season in New Haven?
In New Haven, 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 New Haven?
The most prevalent local pollens in New Haven include Birch, Oak, Maple in the spring season.
What months are worst for allergies in New Haven?
Most New Haven allergy sufferers report the worst symptoms during peak tree pollen in March-May and again during ragweed season in September.
Does New Haven have mold allergies?
Yes. New Haven's climate supports Alternaria and Cladosporium spore exposure, with counts typically peaking in the warm and humid months.
Why are allergies bad in New Haven?
Local geography, climate, and seasonal plant cycles all influence allergen load in New Haven. The combination of regional vegetation and weather creates predictable spring and fall pollen peaks.
Is there a local pollen collection site in New Haven?
Not yet. PollyMap is actively seeking a qualified local allergy clinic or environmental health partner in New Haven to host weekly pollen collection.
How can my clinic become a PollyMap partner in New Haven?
Clinics in New Haven 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.
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