Buenos Aires pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Buenos Aires is low; cypress and willow are low.
Pollen Tomorrow
Tomorrow (21 September 2026) levels are similar to today.
7-Day Trend
Over the next week cypress and willow will increase; grass will remain stable.
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Pollen Risk
Today - 20 September
| Pollen species | Level | Value |
|---|---|---|
| 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) | Low | 6/100 |
Tomorrow - 21 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 | 5/100 | |
| Grass (Poaceae) | None | 0/100 | |
| Willow (Salicaceae) | Low | 4/100 |
Local Environmental Conditions
Buenos Aires' tree-lined boulevards and green spaces, including Bosques de Palermo and the Río de la Plata waterfront, feature plane, poplar, and introduced ash as the main tree pollen sources, with counts varying between these greener areas and the more built-up city centre. Surrounding Pampas grassland and farmland add substantial grass and crop pollen throughout the Southern Hemisphere spring season.
Buenos Aires' pollen season runs from August through December, following the Southern Hemisphere spring pattern. Plane and poplar tree pollen opens the season in August and September, with grass pollen from the local Pampas peaking through October and November. The temperate climate produces a well-defined seasonal peak, with autumn and winter largely free of significant pollen exposure.
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Frequently Asked Questions About Pollen in Buenos Aires, Ciudad Autónoma de
Is pollen high in Buenos Aires right now?
On 20 September 2026, overall pollen levels in Buenos Aires are low. Cypress is the main contributor to airborne pollen, while willow remain at lower levels
Will pollen levels change in Buenos Aires tomorrow?
On 21 September 2026, pollen conditions in Buenos Aires will be similar to today, with cypress at low levels, willow at low levels
Is pollen expected to decrease in Buenos Aires 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 Buenos Aires?
On 20 September 2026, Cypress is the dominant pollen source in Buenos Aires. willow are also present but at lower levels. grass are not currently active.
When is pollen season in Buenos Aires?
How often is the Buenos Aires pollen forecast updated?
The Buenos Aires pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Buenos Aires 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 Buenos Aires 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 Buenos Aires, 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/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).
