Shelbyville pollen forecast — Downtown Shelbyville neighborhood
Pollen Today
Today (20 September) pollen in Downtown Shelbyville, Shelbyville is high; ragweed is high; grass is moderate.
Pollen Tomorrow
Tomorrow (21 September 2026) grass declining, ragweed declining.
7-Day Trend
Over the next week grass and mugwort will increase; ragweed will decrease.
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Pollen Risk
Today - 20 September
| Pollen species | Level | Value |
|---|---|---|
| Alder (Alnus) | None | 0/100 |
| Birch (Betula) | None | 0/100 |
| Hazel (Corylus) | None | 0/100 |
| Cypress (Cupressaceae) | None | 0/100 |
| Grass (Poaceae) | Moderate | 28/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | None | 0/100 |
| Ragweed (Ambrosia) | High | 54/100 |
Tomorrow - 21 September
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Alder (Alnus) | None | 0/100 | — |
| Birch (Betula) | None | 0/100 | — |
| Hazel (Corylus) | None | 0/100 | — |
| Cypress (Cupressaceae) | None | 0/100 | — |
| Grass (Poaceae) | Low | 25/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | None | 0/100 | |
| Ragweed (Ambrosia) | Moderate | 50/100 |
Local Environmental Conditions
Shelbyville's typical vegetation carries through to Downtown Shelbyville, the city's small downtown in Tennessee's horse-farm country, so pollen timing here matches the wider city rather than running on its own schedule. As with most sublevel sites, local landscaping can shift counts slightly from the citywide average.
Downtown Shelbyville's pollen season lines up with the rest of Shelbyville, starting with cedar and elm in February with oak joining in and continuing through March and April. A grass pollen peak follows through April and May; a modest late-summer weed pollen tail continues into September. The warm Southeast climate advances the season compared to more northern US regions, which shapes conditions at Downtown Shelbyville much as it does elsewhere in Shelbyville.
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Frequently Asked Questions About Pollen in Tennessee
Is pollen high in Shelbyville right now?
On 20 September 2026, overall pollen levels in Shelbyville are high. Ambrosia is the main contributor to airborne pollen, while grass remain at lower levels
Will pollen levels change in Shelbyville tomorrow?
On 21 September 2026, pollen conditions in Shelbyville will be different from today, with grass, ambrosia continuing to decline
Is pollen expected to decrease in Shelbyville this week?
According to the five-day outlook, ambrosia pollen levels are expected to gradually decrease, while artemisia and grass pollen will increase, suggesting mixed conditions later in the week.
Which pollen types are currently active in Shelbyville?
On 20 September 2026, Ambrosia is the dominant pollen source in Shelbyville. grass are also present but at lower levels. artemisia are not currently active.
When is pollen season in Shelbyville?
How often is the Shelbyville pollen forecast updated?
The Shelbyville pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Shelbyville come from nearby or far away?
Studies show that most pollen exposure (often 70–90%) comes from nearby sources, such as local trees and vegetation. A good pollen forecast therefore depends on accurately representing local vegetation. Pollen can travel long distances, but this usually matters only early in the season or during specific wind events.
Are pollen levels in Shelbyville based on measurements or forecasts?
Pollen data is often misunderstood. Most "pollen levels" are not real-time measurements, but forecasts.
Direct pollen measurements are typically delayed by 1-2 days because they require manual analysis. To show current conditions in Shelbyville, modern forecasts combine recent measurements, weather data, and information about local vegetation.
This allows us to estimate pollen levels for today and the coming days, not just report the past.
Airmine’s atmospheric monitoring platform was developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team, using satellite and Earth observation technologies to improve emissions monitoring.
Understanding the Scale
The 0–100 scores represent risk levels, not direct measurements of pollen or air pollutant concentrations. Higher scores indicate higher risk. Pollen and air quality use different thresholds.
Pollen
| None | 0 | No or negligible risk of exposure. Pollen/mold exposure is expected to be minimal. |
| Low | 0-25 | Low risk of exposure. Small amounts of pollen or mold spores may be present. |
| Moderate | 25-50 | Moderate risk of exposure. Pollen/mold exposure is expected to be noticeable. |
| High | 50-75 | High risk of exposure. Elevated pollen/mold exposure is expected. |
| Very High | 75-100 | Very high risk of exposure. Pollen/mold exposure is expected to be at or near its highest levels. |
Get More in the Airmine Pollen app
Get 15-day pollen forecasts with morning, afternoon and evening detail, plus 5-day air quality forecasts. Explore interactive pollen risk maps, estimated pollen season start, route profiles and a symptoms diary.
Features and forecast availability vary by region. Currently covering Europe, the contiguous US, southern Canada, South Africa, Australia, Indonesia (Java & Bali), Brazil, Paraguay, Uruguay and the Buenos Aires area.
Developed with support from the European Space Agency (ESA) Business Applications and Space Solutions (BASS).
