Skokie pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Skokie is moderate; grass and ragweed are moderate; mugwort is low.
Pollen Tomorrow
Tomorrow (21 September 2026) ragweed remains moderate, grass 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) | Moderate | 34/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | Low | 2/100 |
| Ragweed (Ambrosia) | Moderate | 44/100 |
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 | 20/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | None | 0/100 | |
| Ragweed (Ambrosia) | Moderate | 29/100 |
Local Environmental Conditions
Skokie's North Shore Chicago suburban setting features oak, maple, and elm as the main tree pollen sources, with exposure varying between the tree-lined residential streets and the more built-up commercial corridors along Dempster Street. The North Shore Channel corridor provides locally significant green space, while the North Shore Lake Michigan setting moderates temperatures and the dense residential tree canopy makes Skokie one of the more significant tree pollen locations in the northern Chicago suburbs.
Skokie's Chicago suburban setting produces a season opening in March with elm and maple before oak peaks through April and May. Grass from surrounding Illinois farmland peaks through June and July before mugwort and nettle extend exposure into September. The North Shore Lake Michigan setting moderates temperatures and onshore lake breezes can periodically suppress pollen dispersal throughout the season.
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Resource Hub
Pollen forecast neighborhoods 1 neighborhood
Sports venues in Skokie 1 sports venue
Frequently Asked Questions About Pollen in Illinois
Is pollen high in Skokie right now?
On 20 September 2026, overall pollen levels in Skokie are moderate. Ambrosia is the main contributor to airborne pollen, while grass and artemisia remain at lower levels
Will pollen levels change in Skokie tomorrow?
On 21 September 2026, pollen conditions in Skokie will be different from today, with ambrosia at moderate levels and grass continuing to decline
Is pollen expected to decrease in Skokie 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 Skokie?
On 20 September 2026, Ambrosia is the dominant pollen source in Skokie. grass and artemisia are also present but at lower levels.
When is pollen season in Skokie?
How often is the Skokie pollen forecast updated?
The Skokie pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Skokie 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 Skokie 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 Skokie, 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).
