Winnetka pollen forecast - today, tomorrow and the week ahead
Today (9 August) pollen in Winnetka is medium; ragweed is medium; mugwort is low. Tomorrow (10 August 2026) levels are similar - mugwort increasing, ragweed increasing, grass at low levels. Over the following five days grass, mugwort, and ragweed will decrease. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Winnetka lies in the Chain O'Lakes region of Lake County, not far from the Des Plaines River and Grant Woods Forest Preserve. The surrounding landscape is dominated by floodplain willow and cattail marsh. The Des Plaines River winds through the wider area, its banks favoring moisture-loving trees such as willow and alder.
Today - 9 August
-
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):
Low
10/100
-
Ragweed (Ambrosia):
Medium
27/100
High pollen levels may trigger sneezing, itchy eyes, and congestion. Airmine's neighbourhood estimates use satellites to map local vegetation and a statistical prediction model, updated four times daily.
Tomorrow - 10 August
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
None
0/100
-
Grass (Poaceae):
Low
21/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
Medium
40/100
-
Ragweed (Ambrosia):
High
59/100
Air quality in Winnetka
View air qualityPollen forecast for neighborhoods and landmarks in Winnetka
Frequently Asked Questions
Is pollen high in Winnetka right now?
On 9 August 2026, overall pollen levels in Winnetka are moderate. Ambrosia is the main contributor to airborne pollen, while artemisia remain at lower levels
Will pollen levels change in Winnetka tomorrow?
On 10 August 2026, pollen conditions in Winnetka will be different from today, with grass at low levels and ambrosia, artemisia increasing
Is pollen expected to decrease in Winnetka this week?
According to the five-day outlook, ambrosia, artemisia, and grass pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in Winnetka?
On 9 August 2026, Ambrosia is the dominant pollen source in Winnetka. artemisia are also present but at lower levels. cypress and grass are not currently active.
When is pollen season in Winnetka?
How often is the Winnetka pollen forecast updated?
The Winnetka pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Winnetka 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 Winnetka 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 Winnetka, 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.
Want to see pollen forecasts for other cities in United States?
Check pollen in other popular cities:
Data provided by Airmine — Last update: 9 August 2026 at 20:27 CEST (Data is updated four times daily.)
This page provides the latest public pollen forecast for Winnetka.
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Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.