Castelvetrano pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Castelvetrano is high; mugwort is high.
Pollen Tomorrow
Tomorrow (21 September 2026) mugwort remains high, grass at low levels.
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) | None | 0/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | High | 59/100 |
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 | 8/100 | |
| Willow (Salicaceae) | None | 0/100 | |
| Mugwort (Artemisia) | High | 70/100 |
Local Environmental Conditions
oak and plane lead the local pollen count in Castelvetrano, which sits on Sicily's southwestern agricultural plain; grass from the wider Sicilia landscape adds to totals as spring gives way to summer. Exposure tends to track green space closely, with the busiest streets generally registering lower counts.
Castelvetrano follows a pattern typical of Sicilia: plane and hazel first, then oak and plane over the following weeks, then grass into early summer, running January to August overall. the dry Mediterranean summer that follows limits any late-season tail.
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Frequently Asked Questions About Pollen in Sicilia
Is pollen high in Castelvetrano right now?
On 20 September 2026, overall pollen levels in Castelvetrano are high. Artemisia is the main contributor to airborne pollen
Will pollen levels change in Castelvetrano tomorrow?
On 21 September 2026, pollen conditions in Castelvetrano will be different from today, with artemisia at high levels, grass at low levels
Is pollen expected to decrease in Castelvetrano this week?
According to the five-day outlook, artemisia and grass pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in Castelvetrano?
On 20 September 2026, Artemisia is the dominant pollen source in Castelvetrano. willow, cypress, and grass are not currently active.
When is pollen season in Castelvetrano?
How often is the Castelvetrano pollen forecast updated?
The Castelvetrano pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Castelvetrano 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 Castelvetrano 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 Castelvetrano, 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).
