Little Grassy Campground & Marina pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Little Grassy Campground & Marina is low; grass and ragweed are low.
Pollen Tomorrow
Tomorrow (21 September 2026) grass 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 | 9/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | None | 0/100 |
| Ragweed (Ambrosia) | Low | 10/100 |
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
This area, a short distance from here, has hazel and willow line the water's edge, releasing pollen that carries easily on the wind. Located close by, this area has forest where oak and birch make up much of the canopy, driving spring pollen counts. Nearby weather stations report comparable trends across the broader stretch of the county.
Hazel and willow along the water get the season underway before other species, leading off the pollen calendar, with a peak generally falling in late winter. Oak and birch in the woods pick up where the earlier species leave off, peaking in the heart of spring, generally April into May. Grass pollen builds through late spring and peaks in June, then yields to ragweed, the dominant late-summer and fall allergen through October.
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Frequently Asked Questions About Pollen in Illinois
Is pollen high in Little Grassy Campground & Marina right now?
On 20 September 2026, overall pollen levels in Little Grassy Campground & Marina are low. Grass is the main contributor to airborne pollen, while ambrosia remain at lower levels
Will pollen levels change in Little Grassy Campground & Marina tomorrow?
On 21 September 2026, pollen conditions in Little Grassy Campground & Marina will be similar to today with no significant pollen expected.
Is pollen expected to decrease in Little Grassy Campground & Marina 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 Little Grassy Campground & Marina?
On 20 September 2026, Grass is the dominant pollen source in Little Grassy Campground & Marina. ambrosia are also present but at lower levels. artemisia are not currently active.
When is pollen season in Little Grassy Campground & Marina?
How often is the Little Grassy Campground & Marina pollen forecast updated?
The Little Grassy Campground & Marina pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Little Grassy Campground & Marina 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 Little Grassy Campground & Marina 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 Little Grassy Campground & Marina, 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).
