Pôrto Seguro pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Pôrto Seguro is low; cypress, grass, and willow are low.
Pollen Tomorrow
Tomorrow (21 September 2026) grass remains low, willow remains low, cypress increasing.
7-Day Trend
Over the next week cypress, grass, and willow 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 | 4/100 |
| Grass (Poaceae) | Low | 2/100 |
| Willow (Salicaceae) | Low | 2/100 |
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 | 34/100 | |
| Grass (Poaceae) | Low | 11/100 | |
| Willow (Salicaceae) | Low | 21/100 |
Local Environmental Conditions
Porto Seguro occupies the Bahia southern Atlantic Forest coast as Brazil's oldest colonial landing site and major tourism destination, where native Atlantic Forest remnants, restinga coastal scrub, and introduced resort vegetation are the main pollen sources. The tropical climate supports year-round pollen production, while the wet season brings the most frequent rainfall interruptions and the coastal Atlantic position means onshore breezes can periodically disperse pollen throughout.
In Pôrto Seguro, pollen exposure builds through the drier months as restinga coastal scrub and introduced resort vegetation pollen spreads freely, while the wet season regularly interrupts dispersal with rainfall.
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Frequently Asked Questions About Pollen in Bahia
Is pollen high in Pôrto Seguro right now?
On 20 September 2026, overall pollen levels in Pôrto Seguro are low. Cypress is the main contributor to airborne pollen, while grass and willow remain at lower levels
Will pollen levels change in Pôrto Seguro tomorrow?
On 21 September 2026, pollen conditions in Pôrto Seguro will be different from today, with grass at low levels, willow at low levels and cypress increasing
Is pollen expected to decrease in Pôrto Seguro this week?
According to the five-day outlook, cypress, grass, and willow pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in Pôrto Seguro?
On 20 September 2026, Cypress is the dominant pollen source in Pôrto Seguro. grass and willow are also present but at lower levels.
When is pollen season in Pôrto Seguro?
How often is the Pôrto Seguro pollen forecast updated?
The Pôrto Seguro pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Pôrto Seguro 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 Pôrto Seguro 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 Pôrto Seguro, 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).
