Normal pollen forecast - today, tomorrow and the week ahead

Today (25 June) pollen in Normal is medium; grass is medium. Tomorrow (26 June 2026) levels are similar - grass declining. Over the following five days grass will increase. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.

For long term forecasts and maps, see the Airmine app

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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team

Normal's McLean County Illinois twin city setting features oak, maple, and elm as the main tree pollen sources, with exposure varying between the Illinois State University campus woodland and the more built-up commercial corridors along Main Street. The Constitution Trail corridor provides locally significant green space, while the ISU campus arboretum contributes distinctive tree pollen diversity and the flat, open cornbelt agricultural landscape surrounding the twin cities allows exceptional grass pollen dispersal throughout summer.

Today - 25 June

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    Medium

    42/100

  • Willow (Salicaceae):

    None

    0/100

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 - 26 June

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    Low

    17/100

  • Willow (Salicaceae):

    None

    0/100

Frequently Asked Questions

Is pollen high in Normal right now?

On 25 June 2026, overall pollen levels in Normal are moderate. Grass is the main contributor to airborne pollen

Will pollen levels change in Normal tomorrow?

On 26 June 2026, pollen conditions in Normal will be different from today, with grass continuing to decline

Is pollen expected to decrease in Normal this week?

According to the five-day outlook, grass pollen levels will increase later in the week.

Which pollen types are currently active in Normal?

On 25 June 2026, Grass is the dominant pollen source in Normal. hazel, cypress, and willow are not currently active.

When is pollen season in Normal?
Normal's central Illinois setting adjacent to Bloomington produces a season opening in late February with elm and maple before oak peaks through April. Grass from surrounding Illinois farmland peaks through June and July before mugwort and nettle extend exposure into September. The Mackinaw River headwaters setting channels airflows, while the continental Midwest climate produces a well-defined seasonal progression and the flat, open agricultural landscape allows grass pollen to disperse widely.
How often is the Normal pollen forecast updated?

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

Does pollen in Normal 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 Normal 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 Normal, 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: 25 Jun 2026, 09:00 CET (Data is updated four times daily.)

This page provides the latest public pollen forecast for Normal.

For long term forecasts and maps, see the Airmine app

Download on the App Store Get it on Google Play

Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team

Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.