Passo Fundo pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Passo Fundo 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 increase.
Explore Forecasts
Air Quality
Pollen in Other Cities
Air Quality in Other Cities
Get More in Our App
Local pollen and air quality forecasts, interactive pollen maps and route profiles
Features and forecast availability vary by region.
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
Passo Fundo rises as the Rio Grande do Sul northern highlands' main university and agricultural city in the wheat region, where native Araucaria forest remnants, eucalyptus, and wheat and soybean farmland are the main pollen sources. The subtropical highland climate produces a well-defined pollen season, while the elevated plateau setting creates a more defined seasonal progression and rainfall interruptions occur throughout the year throughout.
Passo Fundo's pollen season follows the region's typical pattern, led by eucalyptus and wheat pollen, with exposure varying across the year according to local seasonal rainfall and temperature patterns.
Get pollen & AQ on Strava
Follow your environmental exposure and performance with the free Airmine-Strava integration. See your pollen and air quality exposure for every Strava activity.
Resource Hub
Frequently Asked Questions About Pollen in Rio Grande do Sul
Is pollen high in Passo Fundo right now?
On 20 September 2026, overall pollen levels in Passo Fundo are low. Cypress is the main contributor to airborne pollen
Will pollen levels change in Passo Fundo tomorrow?
On 21 September 2026, pollen conditions in Passo Fundo will be similar to today with no significant pollen expected.
Is pollen expected to decrease in Passo Fundo this week?
According to the five-day outlook, cypress, grass, and willow pollen levels will increase later in the week.
Which pollen types are currently active in Passo Fundo?
On 20 September 2026, Cypress is the dominant pollen source in Passo Fundo. grass and willow are not currently active.
When is pollen season in Passo Fundo?
How often is the Passo Fundo pollen forecast updated?
The Passo Fundo pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Passo Fundo 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 Passo Fundo 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 Passo Fundo, 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).
