Brest pollen forecast - today, tomorrow and the week ahead
Today (9 August) pollen in Brest is medium; mugwort is medium; grass is low. Tomorrow (10 August 2026) levels are similar - mugwort remains medium. Over the following five days grass and mugwort 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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Brest's Vallon du Stangalard green spaces and the Penfeld River corridor feature oak, birch, and chestnut as the main tree pollen sources, with exposure varying between these areas and the more built-up port city centre. Surrounding Finistère farmland and bocage woodland contribute substantial tree and grass pollen, while the exposed Atlantic peninsula position means onshore winds frequently moderate local pollen levels.
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):
Medium
47/100
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
43/100
Air quality in Brest
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Frequently Asked Questions
Is pollen high in Brest right now?
On 9 August 2026, overall pollen levels in Brest are moderate. Artemisia is the main contributor to airborne pollen, while grass remain at lower levels
Will pollen levels change in Brest tomorrow?
On 10 August 2026, pollen conditions in Brest will be different from today, with artemisia at medium levels
Is pollen expected to decrease in Brest this week?
According to the five-day outlook, artemisia and grass pollen levels will increase later in the week.
Which pollen types are currently active in Brest?
On 9 August 2026, Artemisia is the dominant pollen source in Brest. grass are also present but at lower levels. hazel, cypress, and willow are not currently active.
When is pollen season in Brest?
How often is the Brest pollen forecast updated?
The Brest pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Brest 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 Brest 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 Brest, 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 France?
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 Brest.
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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.