Carol Stream pollen forecast - today, tomorrow and the week ahead

Today (9 August) pollen in Carol Stream is medium; ragweed is medium. Tomorrow (10 August 2026) levels are similar - ragweed increasing, grass at medium levels, mugwort at medium 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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Carol Stream lies in the DuPage River watershed, not far from the DuPage River and Salt Creek Woods. The surrounding landscape is dominated by floodplain forest and remnant black-soil prairie. The DuPage River winds through the wider area, its banks favoring moisture-loving trees such as willow and alder. Local vegetation still varies with soil type and drainage.

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):

    None

    0/100

  • 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):

    Medium

    29/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Medium

    34/100

  • Ragweed (Ambrosia):

    High

    64/100

Air quality in Carol Stream

View air quality

Pollen forecast for neighborhoods and landmarks in Carol Stream

Cloverdale Northwoods Wayne Center

Frequently Asked Questions

Is pollen high in Carol Stream right now?

On 9 August 2026, overall pollen levels in Carol Stream are moderate. Ambrosia is the main contributor to airborne pollen

Will pollen levels change in Carol Stream tomorrow?

On 10 August 2026, pollen conditions in Carol Stream will be different from today, with grass at medium levels, artemisia at medium levels and ambrosia increasing

Is pollen expected to decrease in Carol Stream this week?

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

Which pollen types are currently active in Carol Stream?

On 9 August 2026, Ambrosia is the dominant pollen source in Carol Stream. cypress, grass, and artemisia are not currently active.

When is pollen season in Carol Stream?
Streamside willow and alder near Ferson Creek kick off the local pollen calendar, usually strongest in the weeks before spring fully arrives. Tree pollen peaks next around Salt Creek Woods, where oak and hickory dominate the canopy through most of April and May. Farther out toward the DuPage River and Herrick Lake Forest Preserve, tree pollen tends to follow this same rough schedule.
How often is the Carol Stream pollen forecast updated?

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

Does pollen in Carol Stream 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 Carol Stream 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 Carol Stream, 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.

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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 Carol Stream.

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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.