Trois-Pistoles pollen forecast - today, tomorrow and the week ahead
Today (9 August) pollen in Trois-Pistoles is medium; mugwort and ragweed are medium; grass is low. Tomorrow (10 August 2026) levels are similar - grass increasing, mugwort increasing, ragweed increasing. 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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Trois-Pistoles' St. Lawrence River estuary setting features spruce, birch, and coastal grassland as the main pollen sources, with exposure varying between shoreline greenery and the small Bas-Saint-Laurent town centre.
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
11/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
Medium
36/100
-
Ragweed (Ambrosia):
Medium
38/100
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):
Medium
28/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
High
52/100
-
Ragweed (Ambrosia):
High
55/100
Air quality in Trois-Pistoles
View air qualityFrequently Asked Questions
Is pollen high in Trois-Pistoles right now?
On 9 August 2026, overall pollen levels in Trois-Pistoles are moderate. Ambrosia is the main contributor to airborne pollen, while artemisia and grass remain at lower levels
Will pollen levels change in Trois-Pistoles tomorrow?
On 10 August 2026, pollen conditions in Trois-Pistoles will be different from today, with grass, ambrosia, artemisia increasing
Is pollen expected to decrease in Trois-Pistoles this week?
According to the five-day outlook, grass, ambrosia, and artemisia pollen levels will increase later in the week.
Which pollen types are currently active in Trois-Pistoles?
On 9 August 2026, Ambrosia is the dominant pollen source in Trois-Pistoles. artemisia and grass are also present but at lower levels. cypress are not currently active.
When is pollen season in Trois-Pistoles?
How often is the Trois-Pistoles pollen forecast updated?
The Trois-Pistoles pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Trois-Pistoles 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 Trois-Pistoles 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 Trois-Pistoles, 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 Trois-Pistoles.
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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.