Le Havre pollen forecast - today, tomorrow and the week ahead
Today (25 June) pollen in Le Havre is medium; grass is medium; cypress is low. Tomorrow (26 June 2026) levels are similar - grass declining. Over the following five days cypress and grass will increase. 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
Le Havre's seafront green spaces and the Seine estuary waterfront feature oak, birch, and plane as the main tree pollen sources, with exposure varying between these areas and the more built-up port city centre. Surrounding Normandy farmland contributes substantial grass pollen, while the exposed Seine estuary and English Channel position means onshore winds frequently disperse pollen across the industrial port city.
Today - 25 June
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
Low
21/100
-
Grass (Poaceae):
Medium
50/100
-
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
6/100
-
Willow (Salicaceae):
None
0/100
Frequently Asked Questions
Is pollen high in Le Havre right now?
On 25 June 2026, overall pollen levels in Le Havre are moderate. Grass is the main contributor to airborne pollen, while cypress remain at lower levels
Will pollen levels change in Le Havre tomorrow?
On 26 June 2026, pollen conditions in Le Havre will be different from today, with grass continuing to decline
Is pollen expected to decrease in Le Havre this week?
According to the five-day outlook, cypress and grass pollen levels will increase later in the week.
Which pollen types are currently active in Le Havre?
On 25 June 2026, Grass is the dominant pollen source in Le Havre. cypress are also present but at lower levels. hazel, willow, alder, and birch are not currently active.
When is pollen season in Le Havre?
How often is the Le Havre pollen forecast updated?
The Le Havre pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Le Havre 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 Le Havre 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 Le Havre, 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 Le Havre.
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.