Le Castellet pollen forecast — Circuit Paul Ricard neighborhood
Pollen Today
Today (20 September) pollen in Circuit Paul Ricard, Le Castellet is moderate; mugwort is moderate; grass is low.
Pollen Tomorrow
Tomorrow (21 September 2026) grass remains low, mugwort declining.
7-Day Trend
Over the next week grass and mugwort will decrease; cypress and willow will remain stable.
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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) | Low | 7/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | Moderate | 29/100 |
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) | Low | 2/100 | |
| Willow (Salicaceae) | None | 0/100 | |
| Mugwort (Artemisia) | Low | 23/100 |
Local Environmental Conditions
Circuit Paul Ricard's setting features plane and pine as the main pollen sources across the grounds, with exposure varying between open and more sheltered sections. Surrounding Provencal farmland and garrigue scrub contribute substantial grass and scrub pollen, while the Mediterranean climate shapes the overall pattern here.
The pollen season here opens with olive and cypress in late winter, tapering off as plane and pine pollen takes over across April through June, before grass from garrigue scrubland extends the season into early summer. The area's Mediterranean climate drives this rhythm, and Circuit Paul Ricard tends to mirror the broader regional trend.
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Sports venues in Le Castellet 1 sports venue
Frequently Asked Questions About Pollen in Provence-Alpes-Côte d’Azur
Is pollen high in Le Castellet right now?
On 20 September 2026, overall pollen levels in Le Castellet are moderate. Artemisia is the main contributor to airborne pollen, while grass remain at lower levels
Will pollen levels change in Le Castellet tomorrow?
On 21 September 2026, pollen conditions in Le Castellet will be different from today, with grass at low levels and artemisia continuing to decline
Is pollen expected to decrease in Le Castellet this week?
According to the five-day outlook, grass and artemisia pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in Le Castellet?
On 20 September 2026, Artemisia is the dominant pollen source in Le Castellet. grass are also present but at lower levels. cypress and willow are not currently active.
When is pollen season in Le Castellet?
How often is the Le Castellet pollen forecast updated?
The Le Castellet pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Le Castellet 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 Castellet 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 Castellet, 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).
