Glen Carbon pollen forecast — Meridian Hills South neighborhood

Today (9 August) pollen in Meridian Hills South, Glen Carbon is medium; ragweed is medium; grass and mugwort are low. Tomorrow (10 August 2026) levels are similar. 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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Meridian Hills South — Water here is bordered by hazel and willow, both notable sources of wind-borne pollen, only about 224 meters off. A stand of oak and birch, the latter ranked among the Midwest's most potent tree allergens, barely 165 meters away. Neighboring areas with similar land cover tend to show a closely matching pollen mix.

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

    8/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Low

    11/100

  • Ragweed (Ambrosia):

    Medium

    29/100

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

    20/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Low

    24/100

  • Ragweed (Ambrosia):

    Medium

    43/100

Other Landmarks in Glen Carbon

Forest Grove Glen Hills Meridian Hills North Meridian Hills South Spring Valley Sugar Bend IV

Frequently Asked Questions

Is pollen high in Glen Carbon right now?

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

Will pollen levels change in Glen Carbon tomorrow?

On 10 August 2026, pollen conditions in Glen Carbon will be similar to today, with ambrosia at medium levels, artemisia at low levels, grass at low levels

Is pollen expected to decrease in Glen Carbon 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 Glen Carbon?

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

When is pollen season in Glen Carbon?
The bank's hazel and willow kick off the pollen season ahead of the rest, climbing steadily from late winter into March. By mid-spring, oak and birch in the woods take over, reaching its high point through April and into May. Grass pollen takes over next, building to a peak around June, then gives way to ragweed, which drives the season's second major surge from mid-August into October.
How often is the Glen Carbon pollen forecast updated?

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

Does pollen in Glen Carbon 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 Glen Carbon 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 Glen Carbon, 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: 10 August 2026 at 02:34 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for Meridian Hills South, Glen Carbon.

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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.