CT · Allergy Season Guide
New Haven Allergy Season Guide
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.
PollyMap is actively looking for a qualified local partner in New Haven.
We're recruiting a qualified local allergy clinic, naturopathic clinic, university, environmental health professional, or other qualified organization to become the official pollen collection partner for New Haven.
Become the Official PollyMap Partner for New HavenSummary
PollyMap does not yet have weekly collected pollen data for New Haven. This guide is based on regional climate patterns and historical allergen data while we recruit a local collection partner. Tree pollen peaks in spring, grass pollen in late spring and early summer, and weed pollen in late summer and fall.
Local allergy guide for New Haven
New Haven shares Connecticut's a humid continental climate with four distinct seasons — cold, snowy winters and warm, humid summers. at 59 ft elevation.
New Haven at 59 ft elevation sits within Connecticut's broader regional climate.
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.
New Haven's local mold profile includes Alternaria, Cladosporium, Aspergillus. Spore counts tend to peak after rainfall and during the warm, humid portion of the year.
Local weather — temperature, rainfall, wind, and humidity — drives day-to-day pollen levels. Dry, windy days following warm weather typically produce the highest counts, while heavy rain temporarily clears the air.
New Haven monthly allergy calendar
Typical month-by-month intensity for the four major airborne allergen categories in New Haven.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tree | Low | Mod | High | V.High | V.High | High | Mod | Low | Low | Low | Low | Low |
| Grass | — | — | Low | Mod | V.High | V.High | High | Mod | Low | Low | — | — |
| Weed | Low | Low | Low | Mod | Mod | Mod | High | V.High | V.High | High | Mod | Low |
| Mold | Low | Low | Mod | Mod | High | High | High | V.High | V.High | V.High | Mod | Low |
Most common local pollens — weeds
Most common airborne molds
Current PollyMap data for New Haven
Official PollyMap Partner in New Haven
Frequently asked questions about allergies in New Haven
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Related guides
State Guide
Connecticut Allergy Season Guide
Nearby city
Bridgeport Allergy Season Guide
Nearby city
Stamford Allergy Season Guide
Nearby city
Hartford Allergy Season Guide
Nearby city
Waterbury Allergy Season Guide
Library
Pollen species library
Library
Mold species library
Reports
Latest PollyMap reports
Partners
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