Valenca, Rio de Janeiro Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (10 October) pollen in Valenca, Rio de Janeiro is moderate; willow is moderate; cypress is low.
Pollen Tomorrow
Tomorrow (11 October 2026) cypress remains low, willow 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) | Low | 24/100 |
| Grass (Poaceae) | None | 0/100 |
| Willow (Salicaceae) | Moderate | 27/100 |
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 | 18/100 | |
| Grass (Poaceae) | None | 0/100 | |
| Willow (Salicaceae) | Low | 24/100 |
Local Environmental Conditions
Most of the area around the center of Valenca, Rio de Janeiro is built-up land, with some woodland and open grassland. With the Sul River nearby, riverside vegetation along its banks contributes to the local mix. Locally, the surrounding woods make trees an important source; street trees, parks and lawns are the main sources in the built-up parts.
Tree pollen comes first, peaking in early spring. Grasses take over in early spring, with temperatures around 20°C, and their pollen lingers into mid-fall. A smaller weed peak follows from early summer into early fall. Warm, humid weather keeps mold spores around for most of the year as well. Within each of these periods, warm, dry and windy days push levels higher, while rain clears the air.
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Frequently Asked Questions About Pollen in Rio de Janeiro
Is pollen high in Valenca, Rio de Janeiro right now?
On 10 October 2026, overall pollen levels in Valenca, Rio de Janeiro are moderate. Willow is the main contributor to airborne pollen, while cypress remain at lower levels
Will pollen levels change in Valenca, Rio de Janeiro tomorrow?
On 11 October 2026, pollen conditions in Valenca, Rio de Janeiro will be different from today, with cypress at low levels and willow continuing to decline
Is pollen expected to decrease in Valenca, Rio de Janeiro 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 Valenca, Rio de Janeiro?
On 10 October 2026, Willow is the dominant pollen source in Valenca, Rio de Janeiro. cypress are also present but at lower levels. grass are not currently active.
When is pollen season in Valenca, Rio de Janeiro?
How often is the Valenca, Rio de Janeiro pollen forecast updated?
The Valenca, Rio de Janeiro pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Valenca, Rio de Janeiro 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 Valenca, Rio de Janeiro 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 Valenca, Rio de Janeiro, 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. |
Get More in the Airmine Pollen app
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).
