St Just Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (10 October) pollen in St Just is moderate; mold (cladosporium) is moderate; mold (alternaria) is low.
Pollen Tomorrow
Tomorrow (11 October 2026) mold (alternaria) remains low, mold (cladosporium) declining, grass at low levels.
7-Day Trend
Over the next week grass, mold (alternaria), and mold (cladosporium) will decrease; cypress, willow, and mugwort 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) | None | 0/100 |
| Mold (Alternaria) | Low | 14/100 |
| Mold (Cladosporium) | Moderate | 27/100 |
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) | Low | 3/100 | |
| Willow (Salicaceae) | None | 0/100 | |
| Mugwort (Artemisia) | None | 0/100 | |
| Mold (Alternaria) | Low | 14/100 | |
| Mold (Cladosporium) | Low | 25/100 |
Local Environmental Conditions
The area around the center of St Just is mostly open grassland. Of the allergenic trees nearby, willow matters most, while maple and ash also contribute. Grass pollen is significant here, and plantain and pigweed contribute weed pollen. Roadside verges and patches of open ground provide further room for grasses and weeds.
Willow, maple and ash lead the season in early spring, as temperatures climb to around 10°C, and tree pollen reaches its peak. Grasses take over in midsummer and keep pollen in the air into early fall. The season closes with plantain and pigweed from late spring into late summer. Warm, damp weather from midsummer into early fall also raises mold spore levels.
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Frequently Asked Questions About Pollen in Cornwall
Is pollen high in St Just right now?
Currently, there is no significant pollen in St Just.
Will pollen levels change in St Just tomorrow?
On 11 October 2026, pollen conditions in St Just will be different from today, with grass at low levels
Is pollen expected to decrease in St Just this week?
According to the five-day outlook, grass pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in St Just?
On 10 October 2026, there are no significant pollen types in St Just.
When is pollen season in St Just?
How often is the St Just pollen forecast updated?
The St Just pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in St Just 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 St Just 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 St Just, 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).
