Charleston, Illinois pollen forecast — Coffeeville neighborhood
Pollen Today
Today (20 September) pollen in Coffeeville, Charleston, Illinois is low; grass and ragweed are low.
Pollen Tomorrow
Tomorrow (21 September 2026) grass remains low, 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 | 18/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | None | 0/100 |
| Ragweed (Ambrosia) | Low | 16/100 |
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 | 2/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | None | 0/100 | |
| Ragweed (Ambrosia) | None | 0/100 |
Local Environmental Conditions
Coffeeville — Hazel and willow thrive along the damp bank, both prolific early wind-pollinators, just over 209 meters from the neighborhood. A mix of oak and birch trees, birch in particular a notorious spring allergen source; this sits a stone's throw away, around 0m. The broader area tends to mirror this pattern, with only minor local variation.
Hazel and willow near the water open the pollen calendar early, usually peaking sometime between late winter and the end of March. Oak and birch in the nearby woodland follow in mid-to-late spring, usually peaking from April into May. Grass pollen takes over next, building to a peak around June, followed by ragweed's own peak stretch from mid-August into October.
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Frequently Asked Questions About Pollen in Illinois
Is pollen high in Charleston, Illinois right now?
On 20 September 2026, overall pollen levels in Charleston, Illinois are low. Ambrosia is the main contributor to airborne pollen, while grass remain at lower levels
Will pollen levels change in Charleston, Illinois tomorrow?
On 21 September 2026, pollen conditions in Charleston, Illinois will be different from today, with grass at low levels
Is pollen expected to decrease in Charleston, Illinois 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 Charleston, Illinois?
On 20 September 2026, Ambrosia is the dominant pollen source in Charleston, Illinois. grass are also present but at lower levels. artemisia are not currently active.
When is pollen season in Charleston, Illinois?
How often is the Charleston, Illinois pollen forecast updated?
The Charleston, Illinois pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Charleston, Illinois 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 Charleston, Illinois 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 Charleston, Illinois, 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).
