Low
Pollen is low — most people won't notice
Grass pollen is the main trigger · Updated 22 hours ago
Today in Elgin: grass pollen is very low, tree pollen is none, weed pollen is none. Overall score: 6/100. Allergies are unlikely for most people right now. Updated at 1:01 AM.
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Pollen levels in Elgin are currently low. Most people should not experience allergy symptoms from pollen.
Tree pollen: None. Grass pollen: Very Low. Weed pollen: None.
Tomorrow's pollen forecast for Elgin is not yet available.
Grass pollen is the highest supported pollen type in Elgin today. Grass pollen is very low.
Tree pollen in Elgin is none today.
Grass pollen in Elgin is very low today.
Weed pollen in Elgin is none today.
Tomorrow's pollen forecast for Elgin is not yet available.
Elgin, Illinois sits in the Fox River Valley within a humid continental climate, producing a prolonged and varied allergy season shaped by cold winters, wet springs, and warm, muggy summers.
Tree pollen typically initiates the cycle from late March through May, with oak, maple, birch, ash, elm, cottonwood, and walnut serving as the dominant regional contributors; oak and birch often drive the most intense peaks in mid-to-late April.
As tree pollen wanes, grass pollen rises from mid-May through July, with Kentucky bluegrass, timothy, orchard grass, and ryegrass common throughout area lawns, parks, and the open prairie corridors along the Fox River.
Weed season follows from August through the first hard frost in October, dominated by ragweed, which thrives in Illinois farmland and disturbed roadsides, alongside lamb's quarters, pigweed, and sagebrush. Late-summer overlap between lingering grasses and emerging ragweed frequently intensifies symptoms in August.
Beyond pollen, Elgin's humidity fosters persistent outdoor mold spores—especially Alternaria and Cladosporium—peaking in late summer and fall, while indoor dust mites thrive during heating season. Proximity to I-90 traffic and occasional agricultural drift can add particulate irritants.
Overall, Elgin's allergy profile is defined by a lengthy, mold-heavy, ragweed-dominant season layered over classic Midwestern tree and grass exposure.