Ouro Prêto pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Ouro Prêto is moderate; willow is moderate; 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 | 83/100 |
| Grass (Poaceae) | None | 0/100 |
| Willow (Salicaceae) | Moderate | 45/100 |
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 | 83/100 | |
| Grass (Poaceae) | None | 0/100 | |
| Willow (Salicaceae) | Moderate | 45/100 |
Local Environmental Conditions
Ouro Preto rises as the magnificent Minas Gerais highland baroque city at the heart of the historic gold and diamond district, where native cerrado trees, eucalyptus, and the dramatic Itacolomi mountain quartzite vegetation are the main pollen sources. The cerrado highland climate produces a well-defined pollen season, while the elevated mountain setting creates variable local conditions and the wet summer months bring frequent rainfall interruptions throughout this UNESCO World Heritage city.
Expect the strongest pollen exposure in Ouro Prêto during the dry season, when eucalyptus and the dramatic Itacolomi mountain quartzite vegetation pollen disperses most easily, while the wet season brings the regular relief of rainfall.
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Frequently Asked Questions About Pollen in Minas Gerais
Is pollen high in Ouro Prêto right now?
On 20 September 2026, overall pollen levels in Ouro Prêto are very high. Cypress is the main contributor to airborne pollen, while willow remain at lower levels
Will pollen levels change in Ouro Prêto tomorrow?
On 21 September 2026, pollen conditions in Ouro Prêto will be similar to today, with cypress at very high levels, willow at moderate levels
Is pollen expected to decrease in Ouro Prêto 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 Ouro Prêto?
On 20 September 2026, Cypress is the dominant pollen source in Ouro Prêto. willow are also present but at lower levels. grass are not currently active.
When is pollen season in Ouro Prêto?
How often is the Ouro Prêto pollen forecast updated?
The Ouro Prêto pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Ouro Prêto 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 Ouro Prêto 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 Ouro Prêto, 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).
