Low
Pollen is low — most people won't notice
Weed pollen is the main trigger · Tomorrow → · Updated 22 hours ago
Today in Knoxville: weed pollen is very low. Overall score: 20/100. Allergies are unlikely for most people right now. Tomorrow is expected to be about the same. Updated at 2:00 AM.
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Pollen levels in Knoxville are currently low. Most people should not experience allergy symptoms from pollen.
Tree pollen: not available. Grass pollen: not available. Weed pollen: Very Low.
Tomorrow's pollen forecast for Knoxville is expected to be about the same, with very low pollen conditions.
Weed pollen is the highest supported pollen type in Knoxville today. Weed pollen is very low.
Tree pollen data for Knoxville is not available in the current forecast.
Grass pollen data for Knoxville is not available in the current forecast.
Weed pollen in Knoxville is very low today.
Tomorrow's pollen forecast for Knoxville is expected to be about the same, with very low pollen conditions.
Nestled in the Tennessee Valley between the Cumberland Plateau and the Great Smoky Mountains, Knoxville consistently ranks among the most challenging U.S. cities for seasonal allergies. Its humid subtropical climate, long growing season, and valley geography trap pollen and mold spores at high concentrations for much of the year.
Tree pollen kicks off the allergy calendar in late February and peaks from March through April, with oak, cedar, juniper, maple, birch, hickory, sycamore, and pine driving the heaviest counts. As tree season winds down in May, grass pollen takes over through June and July, dominated by Kentucky bluegrass, Bermuda, Timothy, orchard, and fescue — all widespread across East Tennessee lawns and pastures.
Late summer brings weed pollen, led by ragweed from mid-August through October, alongside lamb's quarters, pigweed, plantain, and sorrel. The overlap between lingering grasses and emerging ragweed in August often intensifies symptoms.
Beyond pollen, Knoxville's persistent humidity fuels year-round outdoor and indoor mold (notably Alternaria and Cladosporium), while dust mites thrive in warm homes and valley-trapped ozone and particulate pollution can aggravate reactions.
Overall, Knoxville's allergy profile is defined by an extended, overlapping pollen season compounded by high humidity, mold, and air-quality concerns.