PA · Allergy Season Guide
Pittsburgh Allergy Season Guide
PollyMap is actively seeking a qualified local collection partner in Pittsburgh. 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 Pittsburgh.
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 Pittsburgh.
Become the Official PollyMap Partner for PittsburghSummary
PollyMap does not yet have weekly collected pollen data for Pittsburgh. 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 Pittsburgh
Pittsburgh shares Pennsylvania's a humid continental climate with four distinct seasons — cold, snowy winters and warm, humid summers. at 1,223 ft elevation.
Pittsburgh at 1,223 ft elevation sits within Pennsylvania's broader regional climate.
In Pittsburgh, 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.
Pittsburgh'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.
Pittsburgh monthly allergy calendar
Typical month-by-month intensity for the four major airborne allergen categories in Pittsburgh.
| 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 Pittsburgh
Official PollyMap Partner in Pittsburgh
Frequently asked questions about allergies in Pittsburgh
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Related guides
State Guide
Pennsylvania Allergy Season Guide
Nearby city
Philadelphia Allergy Season Guide
Nearby city
Allentown Allergy Season Guide
Nearby city
Reading Allergy Season Guide
Nearby city
Erie Allergy Season Guide
Library
Pollen species library
Library
Mold species library
Reports
Latest PollyMap reports
Partners
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