Congonhas pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Congonhas is high; willow is high; cypress is vhigh.
Pollen Tomorrow
Tomorrow (21 September 2026) levels are similar to today.
7-Day Trend
Over the next week cypress and willow will decrease; 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) | Vhigh | 91/100 |
| Grass (Poaceae) | None | 0/100 |
| Willow (Salicaceae) | High | 54/100 |
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) | Vhigh | 91/100 | |
| Grass (Poaceae) | None | 0/100 | |
| Willow (Salicaceae) | High | 54/100 |
Local Environmental Conditions
Congonhas commands the Minas Gerais iron ore mining district as home of Aleijadinho's famous baroque sculptures, where native cerrado trees, eucalyptus, and mining reclamation vegetation are the main pollen sources. The cerrado climate produces a well-defined pollen season, with the dry season from May to September concentrating pollen dispersal and the wet summer months bringing frequent rainfall interruptions throughout this historic Minas Gerais baroque mining city.
Congonhas sees its clearest pollen peak from May through September, the driest part of the year, when native cerrado trees and mining reclamation vegetation pollen disperses most freely; the following rains keep counts down for the rest of the year.
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Frequently Asked Questions About Pollen in Minas Gerais
Is pollen high in Congonhas right now?
On 20 September 2026, overall pollen levels in Congonhas are very high. Cypress is the main contributor to airborne pollen, while willow remain at lower levels
Will pollen levels change in Congonhas tomorrow?
On 21 September 2026, pollen conditions in Congonhas will be similar to today, with willow at high levels, cypress at very high levels
Is pollen expected to decrease in Congonhas this week?
According to the five-day outlook, willow and cypress pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in Congonhas?
On 20 September 2026, Cypress is the dominant pollen source in Congonhas. willow are also present but at lower levels. grass are not currently active.
When is pollen season in Congonhas?
How often is the Congonhas pollen forecast updated?
The Congonhas pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Congonhas 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 Congonhas 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 Congonhas, 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).
