Terrebonne pollen forecast — Lachenaie neighborhood

Today (9 August) pollen in Lachenaie, Terrebonne is medium; ragweed is medium; grass and mugwort are low. Tomorrow (10 August 2026) levels are similar - mugwort remains low, ragweed declining. 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

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Lachenaie features maple, oak, and ash as the main pollen sources, with exposure varying between residential greenery and the built-up suburban commercial streets of this Terrebonne district near the L'Assomption River.

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

    6/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Low

    16/100

  • 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):

    None

    0/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Low

    8/100

  • Ragweed (Ambrosia):

    Low

    24/100

Other Landmarks in Terrebonne

Frequently Asked Questions

Is pollen high in Terrebonne right now?

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

Will pollen levels change in Terrebonne tomorrow?

On 10 August 2026, pollen conditions in Terrebonne will be different from today, with artemisia at low levels and ambrosia continuing to decline

Is pollen expected to decrease in Terrebonne 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 Terrebonne?

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

When is pollen season in Terrebonne?
Home to older residential streets along the Terrebonne River delta, Lachenaie experiences a river-plain pollen season, with floodplain forest and mature streetscape trees driving a fairly strong spring bloom, while the sector's remaining farmland and open lots keep grass and ragweed exposure elevated well into September compared with Terrebonne's more built-up older core closer to the water.
How often is the Terrebonne pollen forecast updated?

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

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

This page provides the latest public pollen forecast for Lachenaie, Terrebonne.

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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.