Lisbon pollen forecast — Terras da Comporta – Dunas Course neighborhood
Pollen Today
Today (20 September) pollen in Terras da Comporta – Dunas Course, Lisbon is moderate; mugwort is moderate; grass is low.
Pollen Tomorrow
Tomorrow (21 September 2026) mugwort remains moderate, grass no longer expected.
7-Day Trend
Over the next week grass and mugwort will increase; cypress and willow 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) | None | 0/100 |
| Grass (Poaceae) | Low | 6/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | Moderate | 34/100 |
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) | None | 0/100 | |
| Grass (Poaceae) | None | 0/100 | |
| Willow (Salicaceae) | None | 0/100 | |
| Mugwort (Artemisia) | Moderate | 29/100 |
Local Environmental Conditions
Terras da Comporta's Comporta coastal dune setting features marram grass, stone pine, and lavender as the main pollen sources across the natural dune course, with exposure varying between the exposed dune ridge fairways and the more sheltered cork oak woodland sections. The Atlantic coastal position means onshore winds can periodically disperse pollen, while the Sado estuary proximity contributes distinctive wetland vegetation pollen and the Atlantic climate provides regular interruptions.
Pine and dune scrub pollen peak in February and March across the Comporta dunes, with the surrounding rice paddies adding a mild, localized grass pollen note in early summer. From June, dry conditions generally keep pollen levels low for the rest of the season.
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Frequently Asked Questions About Pollen in Lisboa
Is pollen high in Lisbon right now?
On 20 September 2026, overall pollen levels in Lisbon are moderate. Artemisia is the main contributor to airborne pollen, while grass remain at lower levels
Will pollen levels change in Lisbon tomorrow?
On 21 September 2026, pollen conditions in Lisbon will be different from today, with artemisia at moderate levels
Is pollen expected to decrease in Lisbon this week?
According to the five-day outlook, artemisia and grass pollen levels will increase later in the week.
Which pollen types are currently active in Lisbon?
On 20 September 2026, Artemisia is the dominant pollen source in Lisbon. grass are also present but at lower levels. cypress and willow are not currently active.
When is pollen season in Lisbon?
How often is the Lisbon pollen forecast updated?
The Lisbon pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Lisbon 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 Lisbon 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 Lisbon, 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).
