Tossa de Mar pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Tossa de Mar is moderate; mugwort is moderate; grass is low.
Pollen Tomorrow
Tomorrow (21 September 2026) grass remains low, mugwort increasing.
7-Day Trend
Over the next week grass and mugwort will decrease; 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 | 43/100 |
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) | Low | 16/100 | |
| Willow (Salicaceae) | None | 0/100 | |
| Mugwort (Artemisia) | High | 53/100 |
Local Environmental Conditions
In Tossa de Mar, maritime pine and holm oak define the landscape. The peak comes March–May, with a short grass peak in June. Occasional Saharan dust (calima) can worsen air quality for a few days at a time.
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Frequently Asked Questions About Pollen in Catalonia
Is pollen high in Tossa de Mar right now?
On 20 September 2026, overall pollen levels in Tossa de Mar are moderate. Artemisia is the main contributor to airborne pollen, while grass remain at lower levels
Will pollen levels change in Tossa de Mar tomorrow?
On 21 September 2026, pollen conditions in Tossa de Mar will be different from today, with grass at low levels and artemisia increasing
Is pollen expected to decrease in Tossa de Mar this week?
According to the five-day outlook, grass and artemisia pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in Tossa de Mar?
On 20 September 2026, Artemisia is the dominant pollen source in Tossa de Mar. grass are also present but at lower levels. cypress and willow are not currently active.
How often is the Tossa de Mar pollen forecast updated?
The Tossa de Mar pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Tossa de Mar 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 Tossa de Mar 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 Tossa de Mar, 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. |
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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).
