Clamart pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Clamart is low; mugwort is low.
Pollen Tomorrow
Tomorrow (21 September 2026) levels are similar to today.
7-Day Trend
Over the next week mugwort will increase; cypress, grass, and willow will remain stable.
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Features and forecast availability vary by region.
Pollen Risk
Today - 20 September
| Pollen species | Level | Value |
|---|---|---|
| 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) | Low | 20/100 |
Tomorrow - 21 September
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| 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) | Low | 8/100 |
Local Environmental Conditions
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.
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.
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Frequently Asked Questions About Pollen in Île-de-France
Is pollen high in Clamart right now?
On 20 September 2026, overall pollen levels in Clamart are low. Artemisia is the main contributor to airborne pollen
Will pollen levels change in Clamart tomorrow?
On 21 September 2026, pollen conditions in Clamart will be similar to today, with artemisia at low levels
Is pollen expected to decrease in Clamart this week?
According to the five-day outlook, artemisia pollen levels will increase later in the week.
Which pollen types are currently active in Clamart?
On 20 September 2026, Artemisia is the dominant pollen source in Clamart. cypress, grass, and willow are not currently active.
When is pollen season in Clamart?
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.
Understanding the Scale
The 0–100 scores represent risk levels, not direct measurements of pollen or air pollutant concentrations. Higher scores indicate higher risk. Pollen and air quality use different thresholds.
Pollen
| None | 0 | No or negligible risk of exposure. Pollen/mold exposure is expected to be minimal. |
| Low | 0-25 | Low risk of exposure. Small amounts of pollen or mold spores may be present. |
| Moderate | 25-50 | Moderate risk of exposure. Pollen/mold exposure is expected to be noticeable. |
| High | 50-75 | High risk of exposure. Elevated pollen/mold exposure is expected. |
| Very High | 75-100 | Very high risk of exposure. Pollen/mold exposure is expected to be at or near its highest levels. |
Get More in the Airmine Pollen app
Get 15-day pollen forecasts with morning, afternoon and evening detail, plus 5-day air quality forecasts. Explore interactive pollen risk maps, estimated pollen season start, route profiles and a symptoms diary.
Features and forecast availability vary by region. Currently covering Europe, the contiguous US, southern Canada, South Africa, Australia, Indonesia (Java & Bali), Brazil, Paraguay, Uruguay and the Buenos Aires area.
Developed with support from the European Space Agency (ESA) Business Applications and Space Solutions (BASS).
