Osasco Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (10 October) pollen in Osasco is low; cypress and willow are low.
Pollen Tomorrow
Tomorrow (11 October 2026) cypress remains low, willow no longer expected.
7-Day Trend
Over the next week cypress and willow will increase; grass will remain stable.
Explore Forecasts
Air Quality
Pollen in Other Cities
Air Quality in Other Cities
Get More in Our App
Local pollen and air quality forecasts, interactive pollen maps and route profiles
Features and forecast availability vary by region.
Pollen Risk
Today - 10 October
| Pollen species | Level | Value |
|---|---|---|
| Alder (Alnus) | None | 0/100 |
| Birch (Betula) | None | 0/100 |
| Hazel (Corylus) | None | 0/100 |
| Cypress (Cupressaceae) | Low | 2/100 |
| Grass (Poaceae) | None | 0/100 |
| Willow (Salicaceae) | Low | 1/100 |
Tomorrow - 11 October
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| 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 |
Local Environmental Conditions
Around 92% of the area near the heart of Osasco is built-up land. With a stream or river close by, riverside vegetation contributes to the local mix. Grass pollen is plentiful, while pigweed leads among the weeds. Locally, street trees, parks and lawns are the main sources in the built-up parts.
Grasses take over in early spring, with temperatures around 20°C, and their pollen lingers into mid-fall. Later, pigweed keeps weed pollen in the air from early summer into early fall. Mold spores join in from early summer into mid-fall, when damp, warm spells let them thrive. Within each of these periods, warm, dry and windy days push levels higher, while rain clears the air.
Get pollen & AQ on Strava
Follow your environmental exposure and performance with the free Airmine-Strava integration. See your pollen and air quality exposure for every Strava activity.
Resource Hub
Frequently Asked Questions About Pollen in São Paulo
Is pollen high in Osasco right now?
On 10 October 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 11 October 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 10 October 2026, Cypress is the dominant pollen source in Osasco. willow are also present but at lower levels. grass are not currently active.
When is pollen season in Osasco?
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.
Understanding the Scale
The 0–100 pollen scores represent risk levels, not direct pollen measurements. Higher scores indicate higher risk.
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).
