Site of Terrell High School, Denison Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (11 October) pollen in Site of Terrell High School, Denison is moderate; grass and ragweed are moderate; mold (alternaria) and mold (cladosporium) are low.
Pollen Tomorrow
Tomorrow (12 October 2026) levels are similar to today.
7-Day Trend
Over the next week mugwort and ragweed will increase; grass, mold (alternaria), and mold (cladosporium) will decrease.
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Pollen Risk
Today - 11 October
| 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 | 31/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | None | 0/100 |
| Ragweed (Ambrosia) | Moderate | 43/100 |
| Mold (Alternaria) | Low | 18/100 |
| Mold (Cladosporium) | Low | 25/100 |
Tomorrow - 12 October
| 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 | 30/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | None | 0/100 | |
| Ragweed (Ambrosia) | Moderate | 41/100 | |
| Mold (Alternaria) | Low | 15/100 | |
| Mold (Cladosporium) | Low | 23/100 |
Local Environmental Conditions
Around 58% of the area near this part of Denison is woodland, with some built-up land and open grassland. Lawns and planted trees in a nearby park add to local grass and tree pollen. The allergenic tree mix nearby includes maple and oak. Grasses also feature strongly, alongside ragweed among the weeds.
Tree pollen peaks in early spring, when the weather warms to around 15°C and maple and oak are in full flower. Grasses take over in late spring, with temperatures around 25°C, and their pollen lingers into early fall. The season closes with ragweed from late summer into mid-fall. Rain is heaviest in spring, often giving short breaks from high pollen levels. By midwinter, pollen levels are low again.
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Frequently Asked Questions About Pollen in Texas
Is pollen high in Denison right now?
On 11 October 2026, overall pollen levels in Denison are moderate. Grass is the main contributor to airborne pollen, while ambrosia remain at lower levels
Will pollen levels change in Denison tomorrow?
On 12 October 2026, pollen conditions in Denison will be similar to today, with grass at moderate levels, ambrosia at moderate levels
Is pollen expected to decrease in Denison this week?
According to the five-day outlook, grass pollen levels are expected to gradually decrease, while artemisia and ambrosia pollen will increase, suggesting mixed conditions later in the week.
Which pollen types are currently active in Denison?
On 11 October 2026, Grass is the dominant pollen source in Denison. ambrosia are also present but at lower levels. artemisia are not currently active.
When is pollen season in Denison?
How often is the Denison pollen forecast updated?
The Denison pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Denison 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 Denison 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 Denison, 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 pollen scores represent risk levels, not direct pollen measurements. Higher scores indicate higher risk.
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).
