Boulogne-Billancourt pollen forecast - today, tomorrow and the week ahead
Today (25 June) pollen in Boulogne-Billancourt is medium; grass is medium. Tomorrow (26 June 2026) levels are similar - grass declining. Over the following five days grass will decrease. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Boulogne-Billancourt's parks and the Seine River corridor feature oak, plane, and linden as the main tree pollen sources, with exposure varying between green areas and the densely built city centre. As part of the greater Paris metropolitan area, local sources dominate, though surrounding Île-de-France farmland and the Bois de Boulogne contribute additional tree and grass pollen under prevailing westerly winds.
Today - 25 June
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
None
0/100
-
Grass (Poaceae):
Medium
29/100
-
Willow (Salicaceae):
None
0/100
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 - 26 June
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
None
0/100
-
Grass (Poaceae):
Low
25/100
-
Willow (Salicaceae):
None
0/100
Frequently Asked Questions
Is pollen high in Boulogne-Billancourt right now?
On 25 June 2026, overall pollen levels in Boulogne-Billancourt are moderate. Grass is the main contributor to airborne pollen
Will pollen levels change in Boulogne-Billancourt tomorrow?
On 26 June 2026, pollen conditions in Boulogne-Billancourt will be different from today, with grass continuing to decline
Is pollen expected to decrease in Boulogne-Billancourt this week?
According to the five-day outlook, grass pollen levels are expected to gradually decrease, while cypress pollen will increase, suggesting mixed conditions later in the week.
Which pollen types are currently active in Boulogne-Billancourt?
On 25 June 2026, Grass is the dominant pollen source in Boulogne-Billancourt. alder, birch, hazel, cypress, and willow are not currently active.
When is pollen season in Boulogne-Billancourt?
How often is the Boulogne-Billancourt pollen forecast updated?
The Boulogne-Billancourt pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Boulogne-Billancourt 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 Boulogne-Billancourt 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 Boulogne-Billancourt, 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: 25 Jun 2026, 09:02 CET (Data is updated four times daily.)
This page provides the latest public pollen forecast for Boulogne-Billancourt.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.