Barra do Corda pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Barra do Corda is moderate; willow is moderate; cypress is low.
Pollen Tomorrow
Tomorrow (21 September 2026) levels are similar to today.
7-Day Trend
Over the next week cypress and willow will decrease; grass 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) | Low | 5/100 |
| Grass (Poaceae) | None | 0/100 |
| Willow (Salicaceae) | Moderate | 32/100 |
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) | Low | 11/100 | |
| Grass (Poaceae) | None | 0/100 | |
| Willow (Salicaceae) | Moderate | 35/100 |
Local Environmental Conditions
Barra do Corda anchors the Maranhão cerrado-babaçu transitional zone, where babaçu palm, native cerrado trees, and secondary vegetation are the main pollen sources. The wet season from November to April brings frequent rainfall interruptions, while the dry season concentrates pollen dispersal and the babaçu palm contributes a particularly distinctive and locally dominant pollen source throughout this Maranhão interior municipality.
In Barra do Corda, native cerrado trees and secondary vegetation pollen disperses continuously through the year with no distinct seasonal boundary, though the wet season from November to April regularly interrupts counts with frequent rainfall.
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Frequently Asked Questions About Pollen in Maranhão
Is pollen high in Barra do Corda right now?
On 20 September 2026, overall pollen levels in Barra do Corda are moderate. Willow is the main contributor to airborne pollen, while cypress remain at lower levels
Will pollen levels change in Barra do Corda tomorrow?
On 21 September 2026, pollen conditions in Barra do Corda will be similar to today, with cypress at low levels, willow at moderate levels
Is pollen expected to decrease in Barra do Corda this week?
According to the five-day outlook, cypress and willow pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in Barra do Corda?
On 20 September 2026, Willow is the dominant pollen source in Barra do Corda. cypress are also present but at lower levels. grass are not currently active.
When is pollen season in Barra do Corda?
How often is the Barra do Corda pollen forecast updated?
The Barra do Corda pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Barra do Corda 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 Barra do Corda 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 Barra do Corda, 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. |
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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).
