Moderate
Moderate pollen — allergy symptoms are likely
Weed pollen is the main trigger · Tomorrow ↓ · Updated 5 hours ago
Today in Knoxville: weed pollen is high, tree pollen is low, grass pollen is very low. Overall score: 42/100. Allergies may be noticeable right now. Tomorrow is expected to be lower. Pollen is expected to ease on September 12. Updated at 2:00 AM.
Daily pollen updates for Knoxville, TN. Unsubscribe anytime.
Weed pollen is present — mild symptoms possible
Wear sunglasses outdoors
Reduces eye irritation from pollen
As an Amazon Associate, we earn from qualifying purchases.
Pollen levels in Knoxville are moderate. People with heightened sensitivity to pollen may notice symptoms.
Tree pollen: Low. Grass pollen: Very Low. Weed pollen: High.
Tomorrow's pollen forecast for Knoxville is expected to be lower, with mild pollen conditions.
Weed pollen is the highest supported pollen type in Knoxville today. Weed pollen is high.
Tree pollen in Knoxville is low today.
Grass pollen in Knoxville is very low today.
Weed pollen in Knoxville is high today.
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.
Tomorrow's pollen forecast for Knoxville is expected to be lower, with mild pollen conditions.