Downtown Madison pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Downtown Madison is high; ragweed is high; grass is low.
Pollen Tomorrow
Tomorrow (21 September 2026) ragweed remains high, grass increasing.
7-Day Trend
Over the next week grass, mugwort, and ragweed will increase.
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Features and forecast availability vary by region.
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) | Low | 21/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | None | 0/100 |
| Ragweed (Ambrosia) | High | 51/100 |
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) | Moderate | 27/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | None | 0/100 | |
| Ragweed (Ambrosia) | High | 57/100 |
Local Environmental Conditions
Downtown Madison, the city's compact civic and commercial core, shares its vegetation profile with the broader Madison area, so pollen exposure here tracks the same regional sources found across the city. Visitors should expect roughly the same seasonal pattern as elsewhere in the city, with only minor local variation.
As a neighborhood within Madison, Downtown Madison follows the same seasonal pollen curve, opening with cedar and elm from February with oak following close behind through March and April. Grass pollen builds through April and May, and a modest late-summer weed pollen tail continues into September. The warm Southeast climate advances the season compared to more northern US regions.
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Frequently Asked Questions About Pollen in Alabama
Is pollen high in Downtown Madison right now?
On 20 September 2026, overall pollen levels in Downtown Madison are high. Ambrosia is the main contributor to airborne pollen, while grass remain at lower levels
Will pollen levels change in Downtown Madison tomorrow?
On 21 September 2026, pollen conditions in Downtown Madison will be different from today, with ambrosia at high levels and grass increasing
Is pollen expected to decrease in Downtown Madison this week?
According to the five-day outlook, ambrosia, artemisia, and grass pollen levels will increase later in the week.
Which pollen types are currently active in Downtown Madison?
On 20 September 2026, Ambrosia is the dominant pollen source in Downtown Madison. grass are also present but at lower levels. artemisia are not currently active.
When is pollen season in Downtown Madison?
How often is the Downtown Madison pollen forecast updated?
The Downtown Madison pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Downtown Madison 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 Downtown Madison 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 Downtown Madison, 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).
