Juiz de Fora pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Juiz de Fora is moderate; cypress is moderate; willow is low.
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) | Moderate | 48/100 |
| Grass (Poaceae) | None | 0/100 |
| Willow (Salicaceae) | Low | 14/100 |
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 | 48/100 | |
| Grass (Poaceae) | None | 0/100 | |
| Willow (Salicaceae) | Low | 14/100 |
Local Environmental Conditions
Juiz de Fora's parks and the Paraibuna River corridor feature eucalyptus, pine, and native Atlantic Forest species as the main tree pollen sources, with exposure varying between green areas and the more built-up city centre. Surrounding Minas Gerais highland woodland and farmland contribute substantial tree and grass pollen, with a distinct dry season pollen peak from May to September.
Juiz de Fora's pollen season is most pronounced during the dry season from May to September, when eucalyptus, pine, and native Atlantic Forest species release pollen and grass exposure increases. The tropical highland climate means frequent rainfall during the wet summer suppresses dispersal, while the distinct dry season concentrates pollen production across the Minas Gerais highland setting throughout the season.
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Frequently Asked Questions About Pollen in Minas Gerais
Is pollen high in Juiz de Fora right now?
On 20 September 2026, overall pollen levels in Juiz de Fora are moderate. Cypress is the main contributor to airborne pollen, while willow remain at lower levels
Will pollen levels change in Juiz de Fora tomorrow?
On 21 September 2026, pollen conditions in Juiz de Fora will be similar to today, with cypress at moderate levels, willow at low levels
Is pollen expected to decrease in Juiz de Fora this week?
According to the five-day outlook, cypress and willow pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in Juiz de Fora?
On 20 September 2026, Cypress is the dominant pollen source in Juiz de Fora. willow are also present but at lower levels. grass are not currently active.
When is pollen season in Juiz de Fora?
How often is the Juiz de Fora pollen forecast updated?
The Juiz de Fora pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Juiz de Fora 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 Juiz de Fora 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 Juiz de Fora, 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).
