Winona pollen forecast - today, tomorrow and the week ahead
Today (9 August) pollen in Winona is medium; grass and ragweed are medium; mugwort is low. Tomorrow (10 August 2026) levels are similar - grass increasing, mugwort increasing, ragweed increasing. 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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The vegetation around Winona, on bluffs above the Mississippi River in the driftless area, is dominated by oak-hickory forest and bur oak savanna, with riverside cottonwood adding further seasonal pollen exposure. Local parks and open ground tend to see higher pollen counts than the denser urban core. The mix of native and introduced species here is fairly typical for this part of the country.
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):
Medium
47/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
Low
19/100
-
Ragweed (Ambrosia):
Medium
42/100
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):
High
57/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
Medium
28/100
-
Ragweed (Ambrosia):
High
53/100
Air quality in Winona
View air qualityPollen forecast for neighborhoods and landmarks in Winona
Frequently Asked Questions
Is pollen high in Winona right now?
On 9 August 2026, overall pollen levels in Winona are moderate. Ambrosia is the main contributor to airborne pollen, while grass and artemisia remain at lower levels
Will pollen levels change in Winona tomorrow?
On 10 August 2026, pollen conditions in Winona will be different from today, with ambrosia, artemisia, grass increasing
Is pollen expected to decrease in Winona 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 Winona?
On 9 August 2026, Ambrosia is the dominant pollen source in Winona. grass and artemisia are also present but at lower levels. cypress are not currently active.
When is pollen season in Winona?
How often is the Winona pollen forecast updated?
The Winona pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Winona 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 Winona 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 Winona, 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: 10 August 2026 at 02:34 CEST (Data is updated four times daily.)
This page provides the latest public pollen forecast for Winona.
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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.