Rio das Ostras pollen forecast - today, tomorrow and the week ahead
Today (16 July) pollen in Rio das Ostras is low; cypress is low. Tomorrow (17 July 2026) levels are similar. Over the following five days cypress will increase. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Use our Strava plugin to check your own exposure.
Rio das Ostras lies on the Rio de Janeiro northern Atlantic coast in the oil industry zone near Macaé, where restinga coastal scrub, native Atlantic Forest remnants, and introduced urban resort trees are the main pollen sources. The tropical climate supports year-round pollen production, while the coastal position means onshore Atlantic breezes can periodically disperse pollen and the wet summer months bring the most frequent rainfall interruptions throughout this growing Rio de Janeiro oil coast resort municipality.
Today - 16 July
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
Low
4/100
-
Grass (Poaceae):
None
0/100
-
Willow (Salicaceae):
None
0/100
-
Amaranthaceae:
None
0/100
High pollen levels may trigger sneezing, itchy eyes, and congestion. Airmine's neighbourhood estimates use satellites to map local vegetation and a statistical prediction model, updated four times daily.
Tomorrow - 17 July
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
Low
1/100
-
Grass (Poaceae):
None
0/100
-
Willow (Salicaceae):
None
0/100
-
Amaranthaceae:
None
0/100
Air quality in Rio das Ostras
View air qualityFrequently Asked Questions
Is pollen high in Rio das Ostras right now?
On 16 July 2026, overall pollen levels in Rio das Ostras are low. Cypress is the main contributor to airborne pollen
Will pollen levels change in Rio das Ostras tomorrow?
On 17 July 2026, pollen conditions in Rio das Ostras will be similar to today, with cypress at low levels
Is pollen expected to decrease in Rio das Ostras this week?
According to the five-day outlook, cypress and willow pollen levels will increase later in the week.
Which pollen types are currently active in Rio das Ostras?
On 16 July 2026, Cypress is the dominant pollen source in Rio das Ostras. amaranthaceae and willow are not currently active.
When is pollen season in Rio das Ostras?
How often is the Rio das Ostras pollen forecast updated?
The Rio das Ostras pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Rio das Ostras 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 Rio das Ostras 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 Rio das Ostras, 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.
Want to see pollen forecasts for other cities in Brazil?
Check pollen in other popular cities:
Data provided by Airmine — Last update: 16 July 2026 at 05:36 CEST (Data is updated four times daily.)
This page provides the latest public pollen forecast for Rio das Ostras.
For long term forecasts and maps, see the Airmine app
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.