Bayeux pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Bayeux is low; cypress, grass, and willow are low.
Pollen Tomorrow
Tomorrow (21 September 2026) grass remains low, cypress increasing, willow no longer expected.
7-Day Trend
Over the next week grass and willow will increase; cypress will decrease.
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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) | Low | 3/100 |
| Grass (Poaceae) | Low | 7/100 |
| Willow (Salicaceae) | Low | 1/100 |
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) | Moderate | 26/100 | |
| Grass (Poaceae) | Low | 11/100 | |
| Willow (Salicaceae) | None | 0/100 |
Local Environmental Conditions
Bayeux occupies the Paraíba River estuary opposite João Pessoa, where mangrove vegetation, restinga coastal scrub, and introduced urban trees are the main pollen sources. The tropical climate supports year-round pollen production, while the wet season from April to August provides the most frequent rainfall interruptions and the coastal position means onshore Atlantic breezes can periodically disperse pollen throughout.
Bayeux produces pollen year-round given its equatorial setting, with mangrove vegetation and restinga coastal scrub pollen present throughout; the wet season from April to August brings the most frequent rainfall interruptions to an otherwise steady pollen presence.
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Frequently Asked Questions About Pollen in Paraíba
Is pollen high in Bayeux right now?
On 20 September 2026, overall pollen levels in Bayeux are low. Grass is the main contributor to airborne pollen, while willow and cypress remain at lower levels
Will pollen levels change in Bayeux tomorrow?
On 21 September 2026, pollen conditions in Bayeux will be different from today, with grass at low levels and cypress increasing
Is pollen expected to decrease in Bayeux this week?
According to the five-day outlook, cypress pollen levels are expected to gradually decrease, while grass and willow pollen will increase, suggesting mixed conditions later in the week.
Which pollen types are currently active in Bayeux?
On 20 September 2026, Grass is the dominant pollen source in Bayeux. willow and cypress are also present but at lower levels.
When is pollen season in Bayeux?
How often is the Bayeux pollen forecast updated?
The Bayeux pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Bayeux 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 Bayeux 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 Bayeux, 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).
