Neuilly-sur-Seine pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Neuilly-sur-Seine 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 | 16/100 |
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 | 5/100 |
Local Environmental Conditions
Neuilly-sur-Seine's Bois de Boulogne fringe and the Seine River corridor feature plane, oak, and linden as the main tree pollen sources, with the Bois de Boulogne being a particularly significant nearby tree pollen source. Exposure varies between the woodland edge and the densely built city centre, while the Seine corridor channels airflows and local sources dominate in this affluent inner Paris suburb.
Neuilly-sur-Seine's Bois de Boulogne fringe is a particularly significant local tree pollen source during spring in this affluent inner Paris suburb. 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 the urban heat island extends the season and the dry climate means fewer interruptions throughout.
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Frequently Asked Questions About Pollen in Île-de-France
Is pollen high in Neuilly-sur-Seine right now?
On 20 September 2026, overall pollen levels in Neuilly-sur-Seine are low. Artemisia is the main contributor to airborne pollen
Will pollen levels change in Neuilly-sur-Seine tomorrow?
On 21 September 2026, pollen conditions in Neuilly-sur-Seine will be similar to today, with artemisia at low levels
Is pollen expected to decrease in Neuilly-sur-Seine this week?
According to the five-day outlook, artemisia pollen levels will increase later in the week.
Which pollen types are currently active in Neuilly-sur-Seine?
On 20 September 2026, Artemisia is the dominant pollen source in Neuilly-sur-Seine. cypress, grass, and willow are not currently active.
When is pollen season in Neuilly-sur-Seine?
How often is the Neuilly-sur-Seine pollen forecast updated?
The Neuilly-sur-Seine pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Neuilly-sur-Seine 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 Neuilly-sur-Seine 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 Neuilly-sur-Seine, 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).
