Cluster Islands pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Cluster Islands is low; grass, mugwort, and ragweed are low.
Pollen Tomorrow
Tomorrow (21 September 2026) grass no longer expected, mugwort no longer expected, ragweed 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) | Low | 6/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | Low | 2/100 |
| Ragweed (Ambrosia) | Low | 7/100 |
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) | None | 0/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | None | 0/100 | |
| Ragweed (Ambrosia) | None | 0/100 |
Local Environmental Conditions
Cluster Islands, Cluster Islands has hazel and willow take root along the nearby water, prolific early pollinators. Around Cluster Islands, Cluster Islands, a nearby forest is dominated by oak and birch, tied to sharp spring pollen counts. Cluster Islands, Cluster Islands has a local park tops up the local grass and ragweed count with lawn grass and plantings.
Hazel and willow lead the calendar, with a peak around late winter through March. Spring's second wave is oak and birch, usually peaking between April and May. Grass pollen rises through spring, peaking in June, before ragweed dominates from mid-August through October. Timing can vary by a week or two from year to year.
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Frequently Asked Questions About Pollen in Ohio
Is pollen high in Cluster Islands right now?
On 20 September 2026, overall pollen levels in Cluster Islands are low. Artemisia is the main contributor to airborne pollen, while grass and ambrosia remain at lower levels
Will pollen levels change in Cluster Islands tomorrow?
On 21 September 2026, pollen conditions in Cluster Islands will be similar to today with no significant pollen expected.
Is pollen expected to decrease in Cluster Islands this week?
According to the five-day outlook, artemisia, grass, and ambrosia pollen levels will increase later in the week.
Which pollen types are currently active in Cluster Islands?
On 20 September 2026, Artemisia is the dominant pollen source in Cluster Islands. grass and ambrosia are also present but at lower levels.
When is pollen season in Cluster Islands?
How often is the Cluster Islands pollen forecast updated?
The Cluster Islands pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Cluster Islands 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 Cluster Islands 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 Cluster Islands, 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. |
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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).
