Itajaí pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Itajaí is none
Pollen Tomorrow
Tomorrow (21 September 2026) cypress at low levels, willow at low levels.
7-Day Trend
Over the next week cypress and willow will increase; 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) | None | 0/100 |
| 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) | Low | 1/100 | |
| Grass (Poaceae) | None | 0/100 | |
| Willow (Salicaceae) | Low | 1/100 |
Local Environmental Conditions
Itajaí occupies the mouth of the Itajaí-Açu River on the Santa Catarina Atlantic coast as a major port city, where native Atlantic Forest remnants, restinga coastal scrub, and mangrove vegetation are the main pollen sources. The subtropical climate produces a well-defined pollen season, while the Atlantic Ocean position means onshore breezes can periodically disperse pollen and rainfall interruptions occur throughout the year in this important Santa Catarina port.
Itajaí's pollen season follows the region's typical pattern, led by native Atlantic Forest remnants and restinga coastal scrub pollen, with exposure varying across the year according to local seasonal rainfall and temperature patterns.
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Frequently Asked Questions About Pollen in Santa Catarina
Is pollen high in Itajaí right now?
Currently, there is no significant pollen in Itajaí.
Will pollen levels change in Itajaí tomorrow?
On 21 September 2026, pollen conditions in Itajaí will be different from today, with willow at low levels, cypress at low levels
Is pollen expected to decrease in Itajaí this week?
According to the five-day outlook, willow and cypress pollen levels will increase later in the week.
Which pollen types are currently active in Itajaí?
On 20 September 2026, there are no significant pollen types in Itajaí.
When is pollen season in Itajaí?
How often is the Itajaí pollen forecast updated?
The Itajaí pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Itajaí 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 Itajaí 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 Itajaí, 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).
