Francis City Park pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Francis City Park is low; grass and ragweed are low.
Pollen Tomorrow
Tomorrow (21 September 2026) ragweed remains low, grass 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 | 6/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | None | 0/100 |
| Ragweed (Ambrosia) | Low | 23/100 |
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) | Low | 13/100 |
Local Environmental Conditions
Located nearby, this area has along the damp banks, hazel and willow release some of the year's first tree pollen. Located close by, this area has tree cover made up mostly of oak and birch, both significant spring allergen sources. A green space where lawn grass and ornamental plantings top up the local grass and ragweed count; this sits close to this spot.
The water-adjacent hazel and willow are early risers, reaching its high point sometime in late winter or early spring. As spring advances, oak and birch in the nearby woodland become the dominant source, usually hitting its highest point sometime between mid-April and mid-May. Late spring sees grass pollen build steadily toward a peak in June, with ragweed climbing to its own high point from mid-August through October.
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Frequently Asked Questions About Pollen in Illinois
Is pollen high in Francis City Park right now?
On 20 September 2026, overall pollen levels in Francis City Park are low. Ambrosia is the main contributor to airborne pollen, while grass remain at lower levels
Will pollen levels change in Francis City Park tomorrow?
On 21 September 2026, pollen conditions in Francis City Park will be different from today, with ambrosia at low levels
Is pollen expected to decrease in Francis City Park 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 Francis City Park?
On 20 September 2026, Ambrosia is the dominant pollen source in Francis City Park. grass are also present but at lower levels. artemisia are not currently active.
When is pollen season in Francis City Park?
How often is the Francis City Park pollen forecast updated?
The Francis City Park pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Francis City Park 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 Francis City Park 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 Francis City Park, 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).
