South Chicago Township pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in South Chicago Township is moderate; grass and ragweed are moderate.
Pollen Tomorrow
Tomorrow (21 September 2026) ragweed remains moderate, grass declining.
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 | 33/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | None | 0/100 |
| Ragweed (Ambrosia) | Moderate | 48/100 |
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 | 18/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | None | 0/100 | |
| Ragweed (Ambrosia) | Moderate | 33/100 |
Local Environmental Conditions
Here, not far from here, a stretch of hazel and willow lines the water, feeding some of spring's earliest pollen. Tree cover made up mostly of oak and birch, both significant spring allergen sources, close to home here. Located near this part of town, this area has a stretch of mown parkland where turf and ornamental trees feed local grass and ragweed pollen.
The water-adjacent hazel and willow are early risers, usually peaking sometime between late winter and the end of March. Further into spring, the area's oak and birch stands drive the pollen count, cresting around April and May in the year's sharpest tree-pollen spike. Grass pollen counts rise through late spring, reaching their peak around June, before ragweed pollen takes center stage across mid-August into October.
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Frequently Asked Questions About Pollen in Illinois
Is pollen high in South Chicago Township right now?
On 20 September 2026, overall pollen levels in South Chicago Township are moderate. Ambrosia is the main contributor to airborne pollen, while grass remain at lower levels
Will pollen levels change in South Chicago Township tomorrow?
On 21 September 2026, pollen conditions in South Chicago Township will be different from today, with ambrosia at moderate levels and grass continuing to decline
Is pollen expected to decrease in South Chicago Township 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 South Chicago Township?
On 20 September 2026, Ambrosia is the dominant pollen source in South Chicago Township. grass are also present but at lower levels. artemisia are not currently active.
When is pollen season in South Chicago Township?
How often is the South Chicago Township pollen forecast updated?
The South Chicago Township pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in South Chicago Township 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 South Chicago Township 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 South Chicago Township, 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).
