Libertyville pollen forecast — Libertyville HS's Football Field neighborhood
Pollen Today
Today (20 September) pollen in Libertyville HS's Football Field, Libertyville is moderate; ragweed is moderate; grass is low.
Pollen Tomorrow
Tomorrow (21 September 2026) levels are similar to today.
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 | 19/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | None | 0/100 |
| Ragweed (Ambrosia) | Moderate | 43/100 |
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 | 6/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | None | 0/100 | |
| Ragweed (Ambrosia) | Moderate | 30/100 |
Local Environmental Conditions
Libertyville HS's Football Field sits in the Libertyville suburban landscape of Lake County, Illinois, with oak, maple, and birch as the main surrounding tree pollen sources. Surrounding Lake County woodland and farmland contribute substantial grass and tree pollen, while the flat Midwest landscape allows pollen to disperse widely and mugwort extends into September throughout this northern Illinois suburban school setting.
Libertyville HS's Football Field follows Libertyville's established pollen calendar, beginning with maple and elm from March then oak follows, running through April. Grass pollen rises through May and June, and ragweed extends the season into September. A humid continental climate drives a sharp spring tree peak and an equally distinct late-summer ragweed run.
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Resource Hub
Sports venues in Libertyville 2 sports venues
Frequently Asked Questions About Pollen in Illinois
Is pollen high in Libertyville right now?
On 20 September 2026, overall pollen levels in Libertyville are moderate. Ambrosia is the main contributor to airborne pollen, while grass remain at lower levels
Will pollen levels change in Libertyville tomorrow?
On 21 September 2026, pollen conditions in Libertyville will be similar to today, with grass at low levels, ambrosia at moderate levels
Is pollen expected to decrease in Libertyville this week?
According to the five-day outlook, grass, ambrosia, and artemisia pollen levels will increase later in the week.
Which pollen types are currently active in Libertyville?
On 20 September 2026, Ambrosia is the dominant pollen source in Libertyville. grass are also present but at lower levels. artemisia are not currently active.
When is pollen season in Libertyville?
How often is the Libertyville pollen forecast updated?
The Libertyville pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Libertyville 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 Libertyville 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 Libertyville, 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).
