MA · Allergy Season Guide
Boston Allergy Season Guide
PollyMap is actively seeking a qualified local collection partner in Boston. 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 Boston.
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 Boston.
Become the Official PollyMap Partner for BostonSummary
PollyMap does not yet have weekly collected pollen data for Boston. 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 Boston
Boston shares Massachusetts's a humid continental climate with four distinct seasons — cold, snowy winters and warm, humid summers. at 141 ft elevation.
Boston at 141 ft elevation sits within Massachusetts's broader regional climate.
In Boston, 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.
Boston'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.
Boston monthly allergy calendar
Typical month-by-month intensity for the four major airborne allergen categories in Boston.
| 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 Boston
Official PollyMap Partner in Boston
Frequently asked questions about allergies in Boston
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Related guides
State Guide
Massachusetts Allergy Season Guide
Nearby city
Worcester Allergy Season Guide
Nearby city
Springfield Allergy Season Guide
Nearby city
Cambridge Allergy Season Guide
Nearby city
Lowell Allergy Season Guide
Library
Pollen species library
Library
Mold species library
Reports
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