Cachoeira do Sul pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Cachoeira do Sul is low; cypress, grass, and willow are low.
Pollen Tomorrow
Tomorrow (21 September 2026) willow remains low, cypress increasing, grass no longer expected.
7-Day Trend
Over the next week grass and willow will increase; cypress 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 | 1/100 |
| Willow (Salicaceae) | Low | 3/100 |
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 | 37/100 | |
| Grass (Poaceae) | None | 0/100 | |
| Willow (Salicaceae) | Low | 5/100 |
Local Environmental Conditions
Cachoeira do Sul commands the Rio Grande do Sul central region on the Jacuí River, where native pampa grasses, eucalyptus, and riparian gallery forest along the Jacuí are the main pollen sources. The subtropical climate produces a well-defined pollen season, while the Jacuí valley concentrates pollen under calm conditions and rainfall interruptions occur throughout the year in this Rio Grande do Sul central city.
Cachoeira do Sul's pollen season follows the region's typical pattern, led by native pampa grasses and eucalyptus 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 Rio Grande do Sul
Is pollen high in Cachoeira do Sul right now?
On 20 September 2026, overall pollen levels in Cachoeira do Sul are low. Cypress is the main contributor to airborne pollen, while grass and willow remain at lower levels
Will pollen levels change in Cachoeira do Sul tomorrow?
On 21 September 2026, pollen conditions in Cachoeira do Sul will be different from today, with willow at low levels and cypress increasing
Is pollen expected to decrease in Cachoeira do Sul this week?
According to the five-day outlook, cypress pollen levels are expected to gradually decrease, while grass and willow pollen will increase, suggesting mixed conditions later in the week.
Which pollen types are currently active in Cachoeira do Sul?
On 20 September 2026, Cypress is the dominant pollen source in Cachoeira do Sul. grass and willow are also present but at lower levels.
When is pollen season in Cachoeira do Sul?
How often is the Cachoeira do Sul pollen forecast updated?
The Cachoeira do Sul pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Cachoeira do Sul 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 Cachoeira do Sul 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 Cachoeira do Sul, 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).
