Castellón de la Plana Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (10 October) pollen in Castellón de la Plana 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, mold (alternaria), and mold (cladosporium) 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 | 70/100 |
| Mold (Alternaria) | Moderate | 27/100 |
| Mold (Cladosporium) | Moderate | 32/100 |
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 | 29/100 | |
| Mold (Cladosporium) | Moderate | 30/100 |
Local Environmental Conditions
The heart of Castellón de la Plana is surrounded mainly by built-up land, which covers around 83% of the nearby area. Among allergenic trees nearby, olive leads, followed by poplar and oak. Grasses are a major source, with pigweed and plantain adding to the weed pollen load. In the immediate area, planted trees and mown lawns are the main sources in the built-up parts.
Tree pollen peaks in late spring, when the weather warms to around 20°C and olive, poplar and oak are in full flower. Grass pollen follows, peaking in late spring and easing off by early fall. Later, pigweed and plantain keep weed pollen in the air from early summer into early fall. Fall is the wettest time of year, and heavy showers can bring short breaks in pollen.
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Frequently Asked Questions About Pollen in Valencia
Is pollen high in Castellón de la Plana right now?
On 10 October 2026, overall pollen levels in Castellón de la Plana are high. Artemisia is the main contributor to airborne pollen
Will pollen levels change in Castellón de la Plana tomorrow?
On 11 October 2026, pollen conditions in Castellón de la Plana will be similar to today, with artemisia at high levels
Is pollen expected to decrease in Castellón de la Plana this week?
According to the five-day outlook, artemisia pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in Castellón de la Plana?
On 10 October 2026, Artemisia is the dominant pollen source in Castellón de la Plana. willow, cypress, and grass are not currently active.
When is pollen season in Castellón de la Plana?
How often is the Castellón de la Plana pollen forecast updated?
The Castellón de la Plana pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Castellón de la Plana 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 Castellón de la Plana 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 Castellón de la Plana, 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).
