Nova Friburgo pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Nova Friburgo 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 | 78/100 |
| Grass (Poaceae) | None | 0/100 |
| Willow (Salicaceae) | Moderate | 30/100 |
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 | 78/100 | |
| Grass (Poaceae) | None | 0/100 | |
| Willow (Salicaceae) | Moderate | 30/100 |
Local Environmental Conditions
Nova Friburgo climbs into the Rio de Janeiro Serra Fluminense highlands as a cool mountain resort city, where native Atlantic Forest remnants, eucalyptus, and highland campo vegetation are the main pollen sources. The subtropical highland climate produces a well-defined pollen season, while the elevated mountain setting creates variable local conditions and the very wet Serra Fluminense climate provides very frequent rainfall interruptions throughout.
Nova Friburgo's pollen season follows the region's typical pattern, led by native Atlantic Forest remnants and highland campo vegetation pollen, with exposure varying across the year according to local seasonal rainfall and temperature patterns.
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Frequently Asked Questions About Pollen in Rio de Janeiro
Is pollen high in Nova Friburgo right now?
On 20 September 2026, overall pollen levels in Nova Friburgo are very high. Cypress is the main contributor to airborne pollen, while willow remain at lower levels
Will pollen levels change in Nova Friburgo tomorrow?
On 21 September 2026, pollen conditions in Nova Friburgo will be similar to today, with willow at moderate levels, cypress at very high levels
Is pollen expected to decrease in Nova Friburgo 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 Nova Friburgo?
On 20 September 2026, Cypress is the dominant pollen source in Nova Friburgo. willow are also present but at lower levels. grass are not currently active.
When is pollen season in Nova Friburgo?
How often is the Nova Friburgo pollen forecast updated?
The Nova Friburgo pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Nova Friburgo 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 Nova Friburgo 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 Nova Friburgo, 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. |
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).
