Rio Grande pollen forecast - today, tomorrow and the week ahead

Today (16 July) pollen in Rio Grande is low; cypress is low. Tomorrow (17 July 2026) levels are similar. Over the following five days cypress will decrease. 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 Grande lies at the mouth of the Patos Lagoon on the Rio Grande do Sul southern coast, where native pampa grasses, coastal dune vegetation, and the Lagoa dos Patos shoreline vegetation are the main pollen sources at this southernmost major Brazilian port. The subtropical climate produces a well-defined pollen season, while the coastal position means onshore Atlantic winds frequently disperse pollen and the flat southern landscape allows wide dispersal throughout.

Today - 16 July

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    Low

    7/100

  • 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

    8/100

  • Grass (Poaceae):

    None

    0/100

  • Willow (Salicaceae):

    None

    0/100

  • Amaranthaceae:

    None

    0/100

Air quality in Rio Grande

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Frequently Asked Questions

Is pollen high in Rio Grande right now?

On 16 July 2026, overall pollen levels in Rio Grande are low. Cypress is the main contributor to airborne pollen

Will pollen levels change in Rio Grande tomorrow?

On 17 July 2026, pollen conditions in Rio Grande will be similar to today, with cypress at low levels

Is pollen expected to decrease in Rio Grande this week?

According to the five-day outlook, cypress pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.

Which pollen types are currently active in Rio Grande?

On 16 July 2026, Cypress is the dominant pollen source in Rio Grande. willow and amaranthaceae are not currently active.

When is pollen season in Rio Grande?
Rio Grande's pollen season follows the region's typical pattern, led by native pampa grasses and coastal dune vegetation pollen, with exposure varying across the year according to local seasonal rainfall and temperature patterns.
How often is the Rio Grande pollen forecast updated?

The Rio Grande pollen forecast is updated four times daily. See the timestamp below for the most recent update.

Does pollen in Rio Grande 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 Grande 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 Grande, 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 Grande.

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.