Northbrook pollen forecast — Williamsburg Square neighborhood

Today (9 August) pollen in Williamsburg Square, Northbrook is medium; ragweed is medium; mugwort is low. Tomorrow (10 August 2026) levels are similar - mugwort increasing, ragweed increasing, grass at low 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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Williamsburg Square — Located positioned about 293m from the neighborhood, this area has hazel and willow thrive along the damp bank, both prolific early wind-pollinators. Here, roughly 492m away, a mix of oak and birch trees, birch in particular a notorious spring allergen source. A park whose lawns and ornamental trees quietly add to grass and ragweed pollen levels, just over 170 meters from the neighborhood.

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):

    Low

    1/100

  • Ragweed (Ambrosia):

    Medium

    26/100

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

    22/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Medium

    34/100

  • Ragweed (Ambrosia):

    High

    60/100

Other Landmarks in Northbrook

Ancient Tree Fair Meadows Glenbrook Countryside Northbrook Manor Northbrook Park Techny White Plains Williamsburg Square

Frequently Asked Questions

Is pollen high in Northbrook right now?

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

Will pollen levels change in Northbrook tomorrow?

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

Is pollen expected to decrease in Northbrook 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 Northbrook?

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

When is pollen season in Northbrook?
The water-adjacent hazel and willow are early risers, hitting its peak before most trees have even budded, around late winter into March. Oak and birch in the nearby woodland follow in mid-to-late spring, topping out in the April-to-May stretch. Grass pollen takes over next, building to a peak around June, before ragweed takes over as the dominant allergen from mid-August through October.
How often is the Northbrook pollen forecast updated?

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

Does pollen in Northbrook 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 Northbrook 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 Northbrook, 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 Williamsburg Square, Northbrook.

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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.