Pollen today
Loading today’s values…
Ragweed is very low in Knoxville today.
Ragweed should stay very low through Saturday.
Today in Knoxville, TennesseeTuesday, November 3
Weed1Very lowRagweed
TreeNo index
GrassNo index
Next four days, highest level each day:
Wed1Very low
Thu1Very low
Fri1Very low
Sat1Very low
Source: Includes pollen data from GoogleGoogle Maps
Source: Includes pollen data from GoogleIncludes data from Google Maps
Plant by plant
Google’s index for each plant it models in Knoxville today. A plant out of season has no index.
Plants in KnoxvilleTuesday, November 3
Ragweed1Very low
AlderNo index
AshNo index
BirchNo index
CottonwoodNo index
ElmNo index
GrassesNo index
JuniperNo index
MapleNo index
OakNo index
PineNo index
Source: Includes pollen data from GoogleGoogle Maps
Weather and air in Knoxville
The forecast that moves pollen around, and the air beside it.
Weather forecast
- This Afternoon
- Sunny. High 79 °F. Wind 0 mph. 1% chance of precipitation.
- Tonight
- Mostly Cloudy then Slight Chance Rain Showers. Low 61 °F. Wind E 0 to 5 mph. 15% chance of precipitation.
Forecast: National Weather Service, updated 1:26 pm ET.
Pollen alerts for Knoxville by email
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Knoxville’s year in pollen
Each thread is one kind of pollen, and each square is one week, colored by that week’s highest level.
Records for Knoxville began on October 14, 2026. Each week adds a square.
Highest level each week, November 2025 to November 2026, from each day’s forecast.
Tree
Grass
Weed
0 None1 Very low2 Low3 Moderate4 High5 Very highThis weekNot recorded
See it as a table
| Week | Tree | Grass | Weed |
|---|---|---|---|
| Oct 28 to Nov 3 | Not recorded | Not recorded | 2 Low |
| Oct 21 to Oct 27 | Not recorded | Not recorded | 2 Low |
| Oct 14 to Oct 20 | Not recorded | Not recorded | 3 Moderate |
Source: Includes pollen data from GoogleIncludes data from Google Maps
Beyond today’s pollen
What this forecast doesn’t measure, and when to get help.
No mold level
Google’s index covers tree, grass and weed pollen only, so there is no mold level for Knoxville on this page. The National Allergy Bureau publishes pollen and mold counts measured at its stations. Our guides cover common molds such as Alternaria, Cladosporium and Aspergillus.
No indoor allergens
The forecast doesn’t cover allergens indoors either: dust mites, cockroaches, mice, cats and dogs. Our guides explain each one, starting with dust mites and cats.
Asthma in Knoxville
An estimated 11.4% of adults in the city of Knoxville have current asthma, according to the CDC’s PLACES estimate for 2023 (95% confidence interval: 10.1% to 12.8%). It is a statistical estimate from national survey data, not a count.
Allergists in the Knoxville area
23 allergists enrolled in Medicare practice in the Knoxville area: 2.38 for every 100,000 people, more than the 1.22 across the US. The count doesn’t show how soon you can get an appointment. See the doctors listed in the Knoxville area, or how every state and metro compares.
AllergyNest count from CMS’s Doctors and Clinicians file (October 2026) and Census population estimates for 2025.
Knoxville’s pollen seasons
The geography, climate and plants behind each season here, with a source for every fact.
Ridges, often forested, surround the valleys of East Tennessee’s Appalachian Ridge and Valley Region, which extends west from the Blue Ridge for more than 50 miles.2 In its westernmost section, the Great Valley, the valleys grow broader and the ridges lower.2 At the airport, winters average about 41 °F, and a typical year has about 215 freeze-free days.1
A U.S. Forest Service survey of Tennessee’s urban areas, with field data gathered from 2005 to 2009, found Chinese privet to be the most common tree, at about 10 percent of the population.3 Virginia pine and eastern redcedar came next at 6 percent each, followed by hackberry and flowering dogwood.3 Across its range, eastern redcedar pollinates from February in the south and east to May in the north and west.4
Cool-season lawn grasses are generally preferred in the Ridge and Valley, where warm-season varieties are often injured by severe cold and repeated frosts.2 Giant ragweed, a weed that can top 16 feet, is readily found along the fence rows of Tennessee crop fields and pastures.5
Sources
- U.S. Climate Normals 1991–2020: Knoxville McGhee Tyson Airport (USW00013891). NOAA National Centers for Environmental Information. Read on October 15, 2026.
- Chapter 10: Turfgrass Management in Tennessee. University of Tennessee Institute of Agriculture, Tennessee Extension Master Gardener Program. Read on October 15, 2026.
- Urban Forests of Tennessee, 2009 (General Technical Report SRS-149). USDA Forest Service, Southern Research Station. Read on October 15, 2026.
- Species: Juniperus virginiana. USDA Forest Service, Fire Effects Information System. Read on October 15, 2026.
- Giant Ragweed (W119). University of Tennessee Extension. Read on October 15, 2026.
Questions about pollen in Knoxville
Answered from the values on this page.
Is pollen high in Knoxville today?
No. The highest level in Knoxville today, Tuesday, November 3, is very low (1 on the 0 to 5 index), led by ragweed. Weed pollen is very low.
Which pollen is in the air in Knoxville today?
According to Google’s model: Ragweed (very low). Plants Google doesn’t model, and mold, aren’t included.
Will pollen be higher tomorrow in Knoxville?
No. Google’s forecast for tomorrow, Wednesday, is very low (1 on the 0 to 5 index), the same as today. Over the next four days, the highest forecast is very low, on Wednesday.
Is this a pollen count?
No. It’s Google’s modeled pollen index, from 0 (none) to 5 (very high), calculated for the location of central Knoxville. A pollen count is the number of pollen grains measured in a cubic meter of air at a counting station. How our pollen index works.
When does this page update?
Twice a day. We fetch new values soon after midnight in Knoxville, so each day starts with its own values, and again after Google’s daily model run, usually by about 10:30 am ET. Each section shows when its values were retrieved.
How long has AllergyNest recorded pollen in Knoxville?
Since October 14, 2026. The year in pollen above fills in as each day is recorded, and weeks before then show no data. Google doesn’t provide past values, so nothing earlier can be added.
Source: Includes pollen data from GoogleIncludes data from Google Maps