Clamart pollen forecast - today, tomorrow and the week ahead

Today (25 June) pollen in Clamart is low; grass is low. 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

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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team

Clamart's Forêt de Meudon fringe and surrounding green spaces feature oak, birch, and linden as the main tree pollen sources, with the Forêt de Meudon being a particularly significant local tree pollen source during spring. Exposure varies between the woodland edge and the more built-up suburban areas, while surrounding Île-de-France farmland contributes additional grass pollen and the Seine corridor channels airflows.

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):

    Low

    20/100

  • 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

    17/100

  • Willow (Salicaceae):

    None

    0/100

Frequently Asked Questions

Is pollen high in Clamart right now?

On 25 June 2026, overall pollen levels in Clamart are low. Grass is the main contributor to airborne pollen

Will pollen levels change in Clamart tomorrow?

On 26 June 2026, pollen conditions in Clamart will be similar to today, with grass at low levels

Is pollen expected to decrease in Clamart 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 Clamart?

On 25 June 2026, Grass is the dominant pollen source in Clamart. willow, alder, birch, hazel, and cypress are not currently active.

When is pollen season in Clamart?
Clamart's Forêt de Meudon fringe makes it one of the greener parts of southern inner Paris, with locally significant tree pollen during spring. Hazel and alder open from January before birch and plane peak through April and May, with grass peaking through June and July. The Seine corridor channels airflows, while surrounding Essonne farmland extends grass exposure and the dry climate means fewer interruptions.
How often is the Clamart pollen forecast updated?

The Clamart pollen forecast is updated four times daily. See the timestamp below for the most recent update.

Does pollen in Clamart 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 Clamart 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 Clamart, 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?

Bordeaux Lille Lyon Marseille Montpellier Nantes Nice Paris Strasbourg Toulouse

Check pollen in other popular cities:

Sydney Rio de Janeiro Copenhagen Paris Athens Denpasar Rome Cape Town Barcelona London Los Angeles New York

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 Clamart.

For long term forecasts and maps, see the Airmine app

Download on the App Store Get it on Google Play

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.