Circleville pollen forecast - today, tomorrow and the week ahead

Today (9 August) pollen in Circleville is medium; mugwort and ragweed are medium. Tomorrow (10 August 2026) levels are similar. Over the following five days mugwort and ragweed will increase. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.

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Circleville lies in the central Ohio till plain, not far from the Olentangy River and Alum Creek State Park. The surrounding landscape is dominated by bottomland hardwoods and reclaimed prairie. The Olentangy 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):

    Medium

    45/100

  • Ragweed (Ambrosia):

    Medium

    35/100

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):

    None

    0/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Medium

    35/100

  • Ragweed (Ambrosia):

    Medium

    27/100

Air quality in Circleville

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Frequently Asked Questions

Is pollen high in Circleville right now?

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

Will pollen levels change in Circleville tomorrow?

On 10 August 2026, pollen conditions in Circleville will be similar to today, with ambrosia at medium levels, artemisia at medium levels

Is pollen expected to decrease in Circleville this week?

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

Which pollen types are currently active in Circleville?

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

When is pollen season in Circleville?
Along Big Walnut Creek, willow and alder are typically the first trees to shed pollen, with activity building through late winter into early March. Tree pollen peaks next around Blendon Woods Metro Park, where oak and hickory dominate the canopy through most of April and May. Nearby, around the Scioto River and Alum Creek State Park, the same general pattern holds, shifted by only a few days in either direction.
How often is the Circleville pollen forecast updated?

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

Does pollen in Circleville 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 Circleville 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 Circleville, 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 Circleville.

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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.