Osasco pollen forecast - today, tomorrow and the week ahead

Today (9 August) pollen in Osasco is low; cypress and willow are low. Tomorrow (10 August 2026) levels are similar - cypress remains low. Over the following five days cypress and willow will increase. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.

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

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Osasco's urban setting features eucalyptus, pine, and introduced trees as the main pollen sources, with exposure varying between green areas and the densely built city centre. Surrounding São Paulo metropolitan woodland and the Tietê River corridor contribute additional tree and grass pollen, with the tropical highland climate supporting extended pollen production throughout the year.

Today - 9 August

  • 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

    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 - 10 August

  • 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

Air quality in Osasco

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Frequently Asked Questions

Is pollen high in Osasco right now?

On 9 August 2026, overall pollen levels in Osasco are low. Cypress is the main contributor to airborne pollen, while willow remain at lower levels

Will pollen levels change in Osasco tomorrow?

On 10 August 2026, pollen conditions in Osasco will be different from today, with cypress at low levels

Is pollen expected to decrease in Osasco 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 Osasco?

On 9 August 2026, Cypress is the dominant pollen source in Osasco. willow are also present but at lower levels.

When is pollen season in Osasco?
Osasco's pollen season is most pronounced during the dry season from May to September, when eucalyptus, pine, and introduced trees release pollen and grass exposure increases across the city. The tropical highland climate means frequent rainfall during the wet summer suppresses dispersal, while the dry season concentrates pollen production across the western São Paulo metropolitan area throughout the season.
How often is the Osasco pollen forecast updated?

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

Does pollen in Osasco 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 Osasco 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 Osasco, 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: 9 August 2026 at 20:27 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for Osasco.

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

Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.