Bryan, Ohio Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (11 October) pollen in Bryan, Ohio is moderate; ragweed, mold (alternaria), and mold (cladosporium) are moderate; grass and mugwort are low.
Pollen Tomorrow
Tomorrow (12 October 2026) mold (alternaria) declining, mold (cladosporium) declining, grass no longer expected, mugwort no longer expected, ragweed no longer expected.
7-Day Trend
Over the next week grass, mugwort, ragweed, mold (alternaria), and mold (cladosporium) will increase.
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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) | Low | 23/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | Low | 22/100 |
| Ragweed (Ambrosia) | Moderate | 33/100 |
| Mold (Alternaria) | Moderate | 37/100 |
| Mold (Cladosporium) | Moderate | 43/100 |
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) | None | 0/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | None | 0/100 | |
| Ragweed (Ambrosia) | None | 0/100 | |
| Mold (Alternaria) | Low | 13/100 | |
| Mold (Cladosporium) | Low | 20/100 |
Local Environmental Conditions
The area around the center of Bryan, Ohio is mostly built-up land, with some woodland and open grassland. With the Maumee River nearby, riverside vegetation along its banks contributes to the local mix. Around here, the surrounding woods make trees an important source; open grassland adds grass and weed pollen; planted trees and mown lawns are the main sources in the built-up parts.
Flowering trees bring the first pollen of the year in mid-spring. Grass pollen follows, peaking in late spring and easing off by early fall. Weeds on open ground add a smaller late peak from early summer into early fall. Summer is the wettest time of year, and heavy showers can bring short breaks in pollen. By late fall, as temperatures fall to around 5°C, pollen levels are low again.
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Frequently Asked Questions About Pollen in Ohio
Is pollen high in Bryan, Ohio right now?
On 11 October 2026, overall pollen levels in Bryan, Ohio are moderate. Ambrosia is the main contributor to airborne pollen, while grass and artemisia remain at lower levels
Will pollen levels change in Bryan, Ohio tomorrow?
On 12 October 2026, pollen conditions in Bryan, Ohio will be similar to today with no significant pollen expected.
Is pollen expected to decrease in Bryan, Ohio this week?
According to the five-day outlook, grass, ambrosia, and artemisia pollen levels will increase later in the week.
Which pollen types are currently active in Bryan, Ohio?
On 11 October 2026, Ambrosia is the dominant pollen source in Bryan, Ohio. grass and artemisia are also present but at lower levels.
When is pollen season in Bryan, Ohio?
How often is the Bryan, Ohio pollen forecast updated?
The Bryan, Ohio pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Bryan, Ohio 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 Bryan, Ohio 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 Bryan, Ohio, 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. |
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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).
