Guarulhos pollen forecast - today, tomorrow and the week ahead

Today (25 June) pollen in Guarulhos is low; amaranthaceae is low. Tomorrow (26 June 2026) levels are similar. Over the following five days amaranthaceae 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

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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team

Guarulhos' urban green spaces, anchored by Parque Estadual da Cantareira fringe and the Baquirivu-Guaçu River corridor, feature eucalyptus, pine, and native Atlantic Forest species as the main tree pollen sources, with exposure varying between these green areas and the densely built metropolitan centre. Surrounding São Paulo metropolitan woodland and farmland contribute substantial grass and tree pollen, with the tropical climate supporting year-round pollen production.

Today - 25 June

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    None

    0/100

  • Willow (Salicaceae):

    None

    0/100

  • Amaranthaceae:

    Low

    1/100

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 - 26 June

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    None

    0/100

  • Willow (Salicaceae):

    None

    0/100

  • Amaranthaceae:

    Low

    2/100

Frequently Asked Questions

Is pollen high in Guarulhos right now?

On 25 June 2026, overall pollen levels in Guarulhos are low. Amaranthaceae is the main contributor to airborne pollen

Will pollen levels change in Guarulhos tomorrow?

On 26 June 2026, pollen conditions in Guarulhos will be similar to today, with amaranthaceae at low levels

Is pollen expected to decrease in Guarulhos this week?

According to the five-day outlook, amaranthaceae pollen levels will increase later in the week.

Which pollen types are currently active in Guarulhos?

On 25 June 2026, Amaranthaceae is the dominant pollen source in Guarulhos. cypress and willow are not currently active.

When is pollen season in Guarulhos?
Guarulhos' pollen season is most pronounced during the dry season from May to September, when eucalyptus, pine, and native Atlantic Forest species release pollen and grass exposure increases across the city. The tropical highland climate means frequent rainfall during the wet summer from November to March suppresses dispersal, while the dry season concentrates pollen production and dispersal across the São Paulo metropolitan area.
How often is the Guarulhos pollen forecast updated?

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

Does pollen in Guarulhos 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 Guarulhos 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 Guarulhos, 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?

Belém Belo Horizonte Curitiba Fortaleza Porto Alegre Recife Rio de Janeiro Salvador São Paulo

Check pollen in other popular cities:

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Data provided by Airmine — Last update: 25 Jun 2026, 09:00 CET (Data is updated four times daily.)

This page provides the latest public pollen forecast for Guarulhos.

For long term forecasts and maps, see the Airmine app

Download on the App Store Get it on Google Play

Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team

Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.