Santarém Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (10 October) pollen in Santarém is high; mugwort is high; mold (alternaria) and mold (cladosporium) are moderate.
Pollen Tomorrow
Tomorrow (11 October 2026) levels are similar to today.
7-Day Trend
Over the next week mugwort and mold (cladosporium) will increase; mold (alternaria) will decrease; cypress, grass, and willow will remain stable.
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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) | None | 0/100 |
| Grass (Poaceae) | None | 0/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | High | 67/100 |
| Mold (Alternaria) | Moderate | 36/100 |
| Mold (Cladosporium) | Moderate | 33/100 |
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) | None | 0/100 | |
| Grass (Poaceae) | None | 0/100 | |
| Willow (Salicaceae) | None | 0/100 | |
| Mugwort (Artemisia) | High | 70/100 | |
| Mold (Alternaria) | Moderate | 31/100 | |
| Mold (Cladosporium) | Moderate | 29/100 |
Local Environmental Conditions
The heart of Santarém sits among a blend of built-up land and woodland. Close to the Tagus River, riverside vegetation adds to local tree pollen. Among allergenic trees nearby, olive leads, followed by oak. In the immediate area, street trees, parks and lawns are the main sources in the built-up parts.
Olive and oak lead the season in mid-spring, as temperatures climb to around 15°C, and tree pollen reaches its peak. Grasses take over in late spring and keep pollen in the air into early fall. Rain is heaviest in winter, often giving short breaks from high pollen levels. Day to day, sunshine and wind lift the counts, while a spell of rain can bring them down sharply.
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Frequently Asked Questions About Pollen in Santarém
Is pollen high in Santarém right now?
On 10 October 2026, overall pollen levels in Santarém are high. Artemisia is the main contributor to airborne pollen
Will pollen levels change in Santarém tomorrow?
On 11 October 2026, pollen conditions in Santarém will be similar to today, with artemisia at high levels
Is pollen expected to decrease in Santarém this week?
According to the five-day outlook, artemisia pollen levels will increase later in the week.
Which pollen types are currently active in Santarém?
On 10 October 2026, Artemisia is the dominant pollen source in Santarém. cypress, grass, and willow are not currently active.
When is pollen season in Santarém?
How often is the Santarém pollen forecast updated?
The Santarém pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Santarém 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 Santarém 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 Santarém, 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).
