Windsor pollen forecast - today, tomorrow and the week ahead

Today (9 August) pollen in Windsor is low; mugwort and ragweed are low. Tomorrow (10 August 2026) levels are similar - mugwort remains low, ragweed increasing, grass at low levels. Over the following five days grass, 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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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team

Follow your pollen exposure and performance with the free Airmine–Strava integration. See your pollen and air quality exposure for every Strava activity.

Windsor's Detroit River shoreline setting features oak, maple, and ash as the main tree pollen sources, with exposure varying between riverside greenery and the dense border-city industrial streets across from Detroit.

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

    2/100

  • Ragweed (Ambrosia):

    Low

    25/100

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

    4/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Low

    19/100

  • Ragweed (Ambrosia):

    Medium

    43/100

Air quality in Windsor

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Pollen forecast for neighborhoods and landmarks in Windsor

Frequently Asked Questions

Is pollen high in Windsor right now?

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

Will pollen levels change in Windsor tomorrow?

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

Is pollen expected to decrease in Windsor 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 Windsor?

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

When is pollen season in Windsor?
Windsor's position at Canada's southernmost point gives it the mildest climate in the province, translating into the earliest tree pollen of any Ontario city, often starting in March, alongside an extended grass season and a long ragweed tail that stretches deep into autumn.
How often is the Windsor pollen forecast updated?

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

Does pollen in Windsor 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 Windsor 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 Windsor, 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.

Check pollen in other popular cities:

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 Windsor.

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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.