Freeport pollen forecast - today, tomorrow and the week ahead

Today (9 August) pollen in Freeport is medium; ragweed is medium; grass and mugwort are 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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Freeport sits on rolling farmland along the Pecatonica River, where the dominant vegetation is a mix of riverside willow, oak woodlots, and dairy-farm hayfields, shaping the local pollen profile across the seasons. Wind patterns across the area help determine how far pollen travels from these source plants. 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):

    Low

    12/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Low

    25/100

  • Ragweed (Ambrosia):

    Medium

    32/100

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):

    Medium

    41/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    High

    54/100

  • Ragweed (Ambrosia):

    High

    61/100

Air quality in Freeport

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Pollen forecast for neighborhoods and landmarks in Freeport

Frequently Asked Questions

Is pollen high in Freeport right now?

On 9 August 2026, overall pollen levels in Freeport are moderate. Ambrosia is the main contributor to airborne pollen, while artemisia and grass remain at lower levels

Will pollen levels change in Freeport tomorrow?

On 10 August 2026, pollen conditions in Freeport will be different from today, with artemisia, grass, ambrosia increasing

Is pollen expected to decrease in Freeport this week?

According to the five-day outlook, artemisia, grass, and ambrosia pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.

Which pollen types are currently active in Freeport?

On 9 August 2026, Ambrosia is the dominant pollen source in Freeport. artemisia and grass are also present but at lower levels. cypress are not currently active.

When is pollen season in Freeport?
In Freeport, pollen season begins with maple and elm starting in March then oak builds through April. Grass pollen rises through May and June, and a late-summer ragweed peak runs into September. Warm, humid summers in this part of the Midwest favor a pronounced late-season ragweed peak.
How often is the Freeport pollen forecast updated?

The Freeport pollen forecast is updated four times daily. See the timestamp below for the most recent update.

Does pollen in Freeport 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 Freeport 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 Freeport, 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?

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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 Freeport.

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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.