São João del Rei Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (10 October) pollen in São João del Rei is moderate; cypress is moderate; willow is low.
Pollen Tomorrow
Tomorrow (11 October 2026) willow remains low, cypress declining.
7-Day Trend
Over the next week cypress and willow will decrease; grass will remain stable.
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Pollen Risk
Today - 10 October
| Pollen species | Level | Value |
|---|---|---|
| Alder (Alnus) | None | 0/100 |
| Birch (Betula) | None | 0/100 |
| Hazel (Corylus) | None | 0/100 |
| Cypress (Cupressaceae) | Moderate | 38/100 |
| Grass (Poaceae) | None | 0/100 |
| Willow (Salicaceae) | Low | 21/100 |
Tomorrow - 11 October
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Alder (Alnus) | None | 0/100 | — |
| Birch (Betula) | None | 0/100 | — |
| Hazel (Corylus) | None | 0/100 | — |
| Cypress (Cupressaceae) | Low | 25/100 | |
| Grass (Poaceae) | None | 0/100 | |
| Willow (Salicaceae) | Low | 17/100 |
Local Environmental Conditions
The center of São João del Rei is surrounded mainly by built-up land, which covers around 64% of the nearby area, with a good deal of woodland. Close to the Lenheiro River, riverside vegetation adds to local tree pollen. Woodland on all sides makes trees an important local pollen source. Grasses are also a significant pollen source here.
Tree pollen comes first, peaking in early spring. Grasses take over in mid-spring, with temperatures around 20°C, and their pollen lingers into mid-fall. Weeds on open ground add a smaller late peak from early summer into early fall. In warm, humid weather from late spring into mid-fall, mold spores add to the mix, especially after rain.
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Frequently Asked Questions About Pollen in Minas Gerais
Is pollen high in São João del Rei right now?
On 10 October 2026, overall pollen levels in São João del Rei are moderate. Cypress is the main contributor to airborne pollen, while willow remain at lower levels
Will pollen levels change in São João del Rei tomorrow?
On 11 October 2026, pollen conditions in São João del Rei will be different from today, with willow at low levels and cypress continuing to decline
Is pollen expected to decrease in São João del Rei 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 São João del Rei?
On 10 October 2026, Cypress is the dominant pollen source in São João del Rei. willow are also present but at lower levels. grass are not currently active.
When is pollen season in São João del Rei?
How often is the São João del Rei pollen forecast updated?
The São João del Rei pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in São João del Rei 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 São João del Rei 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 São João del Rei, 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 pollen scores represent risk levels, not direct pollen measurements. Higher scores indicate higher risk.
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).
