Rockvale Township pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Rockvale Township is moderate; ragweed is moderate.
Pollen Tomorrow
Tomorrow (21 September 2026) ragweed 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) | None | 0/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | None | 0/100 |
| Ragweed (Ambrosia) | Moderate | 33/100 |
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 | 22/100 |
Local Environmental Conditions
The water's edge is thick with hazel and willow, whose pollen spreads readily in early spring; this sits in the vicinity. Located just outside the immediate area, this area has the tree cover here leans heavily on oak and birch, both key drivers of spring pollen. As with most local readings, actual levels can vary somewhat with short-term weather swings.
Water-edge hazel and willow are usually the first allergenic trees active here, peaking in late winter through March. Oak and birch in the woods pick up where the earlier species leave off, building to its sharpest point across April and May. Grass pollen builds through late spring and peaks in June, before ragweed takes over as the dominant allergen from mid-August through October.
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Resource Hub
Pollen forecast neighborhoods 3 neighborhoods
Sports venues in Rockvale Township 1 sports venue
Frequently Asked Questions About Pollen in Illinois
Is pollen high in Rockvale Township right now?
On 20 September 2026, overall pollen levels in Rockvale Township are moderate. Ambrosia is the main contributor to airborne pollen
Will pollen levels change in Rockvale Township tomorrow?
On 21 September 2026, pollen conditions in Rockvale Township will be different from today, with ambrosia continuing to decline
Is pollen expected to decrease in Rockvale 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 Rockvale Township?
On 20 September 2026, Ambrosia is the dominant pollen source in Rockvale Township. artemisia and grass are not currently active.
When is pollen season in Rockvale Township?
How often is the Rockvale Township pollen forecast updated?
The Rockvale Township pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Rockvale 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 Rockvale 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 Rockvale 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).
