Low
Pollen is low — most people won't notice
Grass pollen is the main trigger · Updated 23 hours ago
Today in Chattanooga: 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 2:01 AM.
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Pollen levels in Chattanooga 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 Chattanooga is not yet available.
Grass pollen is the highest supported pollen type in Chattanooga today. Grass pollen is very low.
Tree pollen in Chattanooga is none today.
Grass pollen in Chattanooga is very low today.
Weed pollen in Chattanooga is none today.
Tomorrow's pollen forecast for Chattanooga is not yet available.
Nestled in a valley along the Tennessee River and surrounded by the southern Appalachian foothills, Chattanooga consistently ranks among the most challenging U.S. cities for seasonal allergies. Its humid subtropical climate, long growing season, and bowl-like geography trap pollen and pollutants, intensifying symptoms for sensitive residents.
Tree pollen kicks off the allergy calendar in late February and surges through May, with oak, cedar, juniper, maple, birch, hickory, sycamore, and pine driving peak counts in March and April. As tree season winds down, grass pollen takes over from May into July, dominated by Bermuda, Timothy, orchard, and fescue grasses that thrive in the region's warm, wet conditions.
Weed pollen then defines the fall allergy season from mid-August through the first hard frost in late October or November, with ragweed as the primary culprit alongside pigweed, lamb's quarters, and plantain. The overlap between lingering grasses and early ragweed in August often produces the year's most intense symptom spikes.
Beyond pollen, Chattanooga's humidity fuels year-round outdoor and indoor mold, while the valley's stagnant air frequently traps dust and ozone pollution. Overall, the city's allergy profile is defined by a long, overlapping, and pollutant-amplified season spanning roughly nine months of the year.