Brenham Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (7 October) pollen in Brenham is high; grass and ragweed are high; mold (alternaria) and mold (cladosporium) are moderate; mugwort is low.
Pollen Tomorrow
Tomorrow (8 October 2026) mugwort remains low, ragweed remains high, mold (alternaria) remains moderate, mold (cladosporium) remains moderate, grass declining.
7-Day Trend
Over the next week grass, mugwort, and ragweed will increase; mold (alternaria) and mold (cladosporium) will decrease.
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Pollen Risk
Today - 7 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) | High | 51/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | Low | 16/100 |
| Ragweed (Ambrosia) | High | 70/100 |
| Alternaria | Moderate | 29/100 |
| Cladosporium | Moderate | 31/100 |
Tomorrow - 8 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 | 36/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | Low | 1/100 | |
| Ragweed (Ambrosia) | High | 65/100 | |
| Alternaria | Moderate | 29/100 | |
| Cladosporium | Moderate | 32/100 |
Local Environmental Conditions
The area around the center of Brenham is a mix of built-up land and woodland, plus some open grassland. Trees are an important local pollen source, given how much woodland surrounds the area. Grasses add a sizeable share of the local pollen. Around here, planted trees and mown lawns are the main sources in the built-up parts.
Flowering trees bring the first pollen of the year in early spring. Grasses take over in mid-spring and keep pollen in the air into mid-fall. A smaller weed peak follows from early summer into early fall. Spring is the wettest time of year, and heavy showers can bring short breaks in pollen.
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Frequently Asked Questions About Pollen in Texas
Is pollen high in Brenham right now?
On 7 October 2026, overall pollen levels in Brenham are high. Ambrosia is the main contributor to airborne pollen, while grass and artemisia remain at lower levels
Will pollen levels change in Brenham tomorrow?
On 8 October 2026, pollen conditions in Brenham will be different from today, with ambrosia at high levels, artemisia at low levels and grass continuing to decline
Is pollen expected to decrease in Brenham 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 Brenham?
On 7 October 2026, Ambrosia is the dominant pollen source in Brenham. grass and artemisia are also present but at lower levels.
When is pollen season in Brenham?
How often is the Brenham pollen forecast updated?
The Brenham pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Brenham 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 Brenham 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 Brenham, 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).
