Chelles pollen forecast - today, tomorrow and the week ahead
Today (25 June) pollen in Chelles is medium; grass is medium. Tomorrow (26 June 2026) levels are similar. 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
Chelles' Marne River waterfront green spaces feature plane, oak, and linden as the main tree pollen sources, with exposure varying between these areas and the densely built suburban landscape. As part of the greater Paris metropolitan area, the Marne valley channels airflows and local sources dominate, while surrounding Seine-et-Marne farmland contributes additional grass and tree 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
30/100
-
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):
Medium
28/100
-
Willow (Salicaceae):
None
0/100
Frequently Asked Questions
Is pollen high in Chelles right now?
On 25 June 2026, overall pollen levels in Chelles are moderate. Grass is the main contributor to airborne pollen
Will pollen levels change in Chelles tomorrow?
On 26 June 2026, pollen conditions in Chelles will be similar to today, with grass at medium levels
Is pollen expected to decrease in Chelles 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 Chelles?
On 25 June 2026, Grass is the dominant pollen source in Chelles. willow, alder, birch, hazel, and cypress are not currently active.
When is pollen season in Chelles?
How often is the Chelles pollen forecast updated?
The Chelles pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Chelles 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 Chelles 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 Chelles, 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, 09:01 CET (Data is updated four times daily.)
This page provides the latest public pollen forecast for Chelles.
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.