Canal Winchester pollen forecast — West Mound Street Historic District neighborhood
Pollen Today
Today (20 September) pollen in West Mound Street Historic District, Canal Winchester 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 | 54/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | Low | 23/100 |
| Ragweed (Ambrosia) | High | 66/100 |
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 | 12/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | None | 0/100 | |
| Ragweed (Ambrosia) | Low | 24/100 |
Local Environmental Conditions
Hazel and willow crowd the water's edge, both classic sources of early allergenic pollen, about 500-600 meters off. Located roughly 300 meters to the north or south of here, this area has a wooded stretch of oak and birch, with birch responsible for some of the sharpest spring counts.
Hazel and willow by the water are typically first out of the gate, hitting its peak before most trees have even budded, around late winter into March. Oak and birch in the woods pick up where the earlier species leave off, typically landing in April and May. Late spring brings rising grass pollen that crests in June, before ragweed's late-summer surge carries the season into October.
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Pollen forecast neighborhoods 6 neighborhoods
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Frequently Asked Questions About Pollen in Ohio
Is pollen high in Canal Winchester right now?
On 20 September 2026, overall pollen levels in Canal Winchester are high. Ambrosia is the main contributor to airborne pollen, while grass and artemisia remain at lower levels
Will pollen levels change in Canal Winchester tomorrow?
On 21 September 2026, pollen conditions in Canal Winchester will be different from today, with ambrosia, grass continuing to decline
Is pollen expected to decrease in Canal Winchester 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 Canal Winchester?
On 20 September 2026, Ambrosia is the dominant pollen source in Canal Winchester. grass and artemisia are also present but at lower levels.
When is pollen season in Canal Winchester?
How often is the Canal Winchester pollen forecast updated?
The Canal Winchester pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Canal Winchester 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 Canal Winchester 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 Canal Winchester, 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).
