When is allergy season in Kentucky?

Allergy season in Kentucky 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 Kentucky?

In Kentucky, the highest-pollen species are typically Oak, Birch, Cedar in spring, Bluegrass grass in early summer, and Ragweed in fall.

What months are worst for allergies in Kentucky?

For most people, April and May (tree pollen) and September (ragweed) are the most difficult months in Kentucky, with grass pollen creating a third peak in June.

Does Kentucky 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.

KY · Allergy Season Guide

Kentucky Allergy Season Guide

Kentucky experiences a humid subtropical to humid continental climate with warm, humid summers and mild to cold winters.

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Summary

Kentucky has 0 active PollyMap collection sites, and is seeking partners in 5 additional cities. Tree pollen typically dominates early spring, grass pollen peaks in late spring and early summer, and weed pollen (including ragweed) extends from late summer through fall.

PollyMap collection status across Kentucky

Active

Pending

Seeking Partner

Statewide allergy overview

Kentucky experiences a humid subtropical to humid continental climate with warm, humid summers and mild to cold winters.

Oak, birch, cedar, maple, and pine drive a long March-through-May tree season. Grass pollen is heaviest in May and June, and ragweed extends through October.

High summer humidity and dense forest cover produce sustained high mold counts from June through frost.

Allergy patterns vary by elevation and proximity to coast or mountains within Kentucky, but most of the state shares a common seasonal rhythm of spring tree pollen, summer grass pollen, and late-summer to fall weed pollen.

Kentucky allergy calendar

Month-by-month intensity for the four major airborne allergen categories.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Tree	Low	Mod	V.High	V.High	High	Mod	Low	Low	Low	Low	Low	Low
Grass	—	Low	Mod	High	V.High	High	Mod	Low	Low	Low	—	—
Weed	Low	Low	Low	Mod	Mod	Mod	High	V.High	V.High	High	Mod	Low
Mold	Low	Mod	Mod	Mod	High	High	V.High	V.High	V.High	High	Mod	Low

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Major city guides in Kentucky

Louisville

Seeking Partner

View Louisville allergy season guide →

Lexington

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View Lexington allergy season guide →

Bowling Green

Seeking Partner

View Bowling Green allergy season guide →

Owensboro

Seeking Partner

View Owensboro allergy season guide →

Covington

Seeking Partner

View Covington allergy season guide →

Latest PollyMap reports for Kentucky

PollyMap is currently recruiting collection partners in this state. No locally-collected reports have been published yet.

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