Las Piedras pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (2 September) pollen in Las Piedras is low; cypress and willow are low.
Pollen Tomorrow
Tomorrow (3 September 2026) cypress remains low, willow no longer expected.
7-Day Trend
Over the next week cypress and willow will increase; grass will remain stable.
Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset. Airmine's estimates use satellites to map local vegetation and a statistical prediction model, updated four times daily. Developed with support from the European Space Agency (ESA) Business Applications and Space Solutions (BASS) team.
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Features and forecast availability vary by region.
Pollen Risk
Today - 2 September
| Pollen species | Level | Value |
|---|---|---|
| Alder (Alnus) | None | 0/100 |
| Birch (Betula) | None | 0/100 |
| Hazel (Corylus) | None | 0/100 |
| Cypress (Cupressaceae) | Low | 16/100 |
| Grass (Poaceae) | None | 0/100 |
| Willow (Salicaceae) | Low | 1/100 |
Tomorrow - 3 September
| 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 | 2/100 | |
| Grass (Poaceae) | None | 0/100 | |
| Willow (Salicaceae) | None | 0/100 |
Local Environmental Conditions
Las Piedras extends through the Canelones department east of Montevideo as part of the Uruguayan capital metropolitan area, where eucalyptus, native riverside vegetation, and introduced urban trees eucalyptus and native riverside vegetation lead the local pollen count, with grass from Canelones farmland adding to it over the spring weeks and summer. Rain later in the year typically brings the season down.
Las Piedras's pollen count is highest from October through December, led by eucalyptus and native riverside vegetation as spring turns to summer south of the equator. Warmer, stiller days during the peak tend to bring the highest counts.
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Frequently Asked Questions About Pollen in Canelones
Is pollen high in Las Piedras right now?
On 2 September 2026, overall pollen levels in Las Piedras are low. Cypress is the main contributor to airborne pollen, while willow remain at lower levels
Will pollen levels change in Las Piedras tomorrow?
On 3 September 2026, pollen conditions in Las Piedras will be different from today, with cypress at low levels
Is pollen expected to decrease in Las Piedras 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 Las Piedras?
On 2 September 2026, Cypress is the dominant pollen source in Las Piedras. willow are also present but at lower levels. grass are not currently active.
When is pollen season in Las Piedras?
How often is the Las Piedras pollen forecast updated?
The Las Piedras pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Las Piedras 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 Las Piedras 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 Las Piedras, 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 scores represent risk levels, not direct measurements of pollen or air pollutant concentrations. Higher scores indicate higher risk. Pollen and air quality use different thresholds.
Pollen
| None | 0 | No or negligible risk of exposure. Pollen exposure is expected to be minimal. |
| Low | 0-25 | Low risk of exposure. Small amounts of pollen may be present. |
| Moderate | 25-50 | Moderate risk of exposure. Pollen exposure is expected to be noticeable. |
| High | 50-75 | High risk of exposure. Elevated pollen exposure is expected. |
| Very High | 75-100 | Very high risk of exposure. Pollen 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).
