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 — or any clinic that provides allergy care — to become the official pollen collection partner for New Haven.
Become the Official PollyMap Partner for New HavenOfficial PollyMap Partner in New Haven
Become the Official PollyMap Partner for New Haven
Own the weekly real-sample reports, PollyMap Lab analysis, and trusted local profile for New Haven. One clinic per territory.
Apply for New HavenWhile we find a local clinic
Test the air at your own home in New Haven
No allergy clinic is reporting from New Haven 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.
Summary
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
Frequently asked questions about allergies in New Haven
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
Become a partner
Get local pollen alerts for New Haven.
Subscribe and we'll email you when new local reports are published.
Subscribe to alerts