NH
New Hampshire Pollen Reports
New Hampshire experiences a humid continental climate with four distinct seasons — cold, snowy winters and warm, humid summers.
No active PollyMap Partner in New Hampshire yet
We're seeking a pollen partner in New Hampshire.
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 New Hampshire. Exclusive territory, weekly content, and AI-assisted analysis included.
Pollen patterns across New Hampshire
Birch, oak, maple, and beech produce an intense April-May tree season. Grass pollen peaks in June, and ragweed lasts from mid-August through October.
New Hampshire pollen calendar
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
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| grass | ||||||||||||
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| mold |
Featured cities in New Hampshire
Don't see your city? PollyMap partners can serve any city in New Hampshire — request a local report below.
Don't see your city?
We cover every city in New Hampshire 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 New Hampshire?
Allergy season in New Hampshire 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 New Hampshire?
In New Hampshire, the highest-pollen species are typically Birch, Oak, Maple in spring, Timothy grass in early summer, and Ragweed in fall.
What months are worst for allergies in New Hampshire?
For most people, April and May (tree pollen) and September (ragweed) are the most difficult months in New Hampshire, with grass pollen creating a third peak in June.
Does New Hampshire 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 New Hampshire.
PollyMap is actively seeking allergy clinics and qualified collectors in New Hampshire.
Apply today