Troy Farms pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Troy Farms is high; grass and ragweed are high; mugwort is low.
Pollen Tomorrow
Tomorrow (21 September 2026) grass declining, ragweed declining, mugwort no longer expected.
7-Day Trend
Over the next week grass, mugwort, and ragweed will increase.
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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) | High | 52/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | Low | 23/100 |
| Ragweed (Ambrosia) | High | 67/100 |
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 | 9/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | None | 0/100 | |
| Ragweed (Ambrosia) | Low | 23/100 |
Local Environmental Conditions
Nearby, about 400 meters off, the riverbank shelters hazel and willow, two trees whose pollen travels readily on the breeze. Here, just over 100-200 meters from the neighborhood, woodland dominated by oak and birch, with birch a leading regional tree-pollen allergen. A park combining lawn grass and planted trees, both minor but real contributors to pollen here, not far off, about 600-700m out.
Hazel and willow by the water are typically first out of the gate, getting an early start, typically cresting between February and March. Woodland oak and birch pick up the pace next, through mid-to-late spring, usually peaking from April into May. Moving into early summer, grass pollen climbs to its seasonal high in June, handing off to ragweed, which peaks from mid-August through October.
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Frequently Asked Questions About Pollen in Ohio
Is pollen high in Troy Farms right now?
On 20 September 2026, overall pollen levels in Troy Farms are high. Ambrosia is the main contributor to airborne pollen, while grass and artemisia remain at lower levels
Will pollen levels change in Troy Farms tomorrow?
On 21 September 2026, pollen conditions in Troy Farms will be different from today, with ambrosia, grass continuing to decline
Is pollen expected to decrease in Troy Farms 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 Troy Farms?
On 20 September 2026, Ambrosia is the dominant pollen source in Troy Farms. grass and artemisia are also present but at lower levels.
When is pollen season in Troy Farms?
How often is the Troy Farms pollen forecast updated?
The Troy Farms pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Troy Farms 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 Troy Farms 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 Troy Farms, 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).
