Coroatá pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Coroatá is low; cypress is low.
Pollen Tomorrow
Tomorrow (21 September 2026) cypress no longer expected.
7-Day Trend
Over the next week cypress, grass, 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) | Low | 1/100 |
| Grass (Poaceae) | None | 0/100 |
| Willow (Salicaceae) | None | 0/100 |
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 |
Local Environmental Conditions
Coroatá lies in the eastern Maranhão babaçu palm zone as a commercial hub, 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.
Coroatá produces pollen year-round given its equatorial setting, with babaçu palm and native cerrado trees pollen present throughout; the wet season from November to April brings the most frequent rainfall interruptions to an otherwise steady pollen presence.
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Frequently Asked Questions About Pollen in Maranhão
Is pollen high in Coroatá right now?
On 20 September 2026, overall pollen levels in Coroatá are low. Cypress is the main contributor to airborne pollen
Will pollen levels change in Coroatá tomorrow?
On 21 September 2026, pollen conditions in Coroatá will be similar to today with no significant pollen expected.
Is pollen expected to decrease in Coroatá this week?
According to the five-day outlook, pollen levels are expected to remain relatively stable.
Which pollen types are currently active in Coroatá?
On 20 September 2026, Cypress is the dominant pollen source in Coroatá. grass and willow are not currently active.
When is pollen season in Coroatá?
How often is the Coroatá pollen forecast updated?
The Coroatá pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Coroatá 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 Coroatá 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 Coroatá, 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).
