Nelson Caerphilly Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (10 October) pollen in Nelson Caerphilly is low; mold (alternaria) and mold (cladosporium) are low.
Pollen Tomorrow
Tomorrow (11 October 2026) levels are similar to today.
7-Day Trend
Over the next week mugwort will increase; 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) | None | 0/100 |
| Mold (Alternaria) | Low | 5/100 |
| Mold (Cladosporium) | Low | 17/100 |
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) | None | 0/100 | |
| Mold (Alternaria) | Low | 6/100 | |
| Mold (Cladosporium) | Low | 16/100 |
Local Environmental Conditions
Around 48% of the area near the heart of Nelson Caerphilly is open grassland, with a good deal of woodland. Common allergenic trees nearby include birch, oak and ash. Grasses are a major source, with plantain and mugwort adding to the weed pollen load. Roadside verges and patches of open ground provide further room for grasses and weeds.
Tree pollen peaks in mid-spring, when the weather warms to around 10°C and birch, oak and ash are in full flower. Grasses take over in early summer and keep pollen in the air into late summer. The season closes with plantain and mugwort from late spring into late summer. By early winter, as temperatures fall to around 5°C, pollen levels are low again.
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Frequently Asked Questions About Pollen in Caerphilly
Is pollen high in Nelson Caerphilly right now?
Currently, there is no significant pollen in Nelson Caerphilly.
Will pollen levels change in Nelson Caerphilly tomorrow?
On 11 October 2026, pollen conditions in Nelson Caerphilly will be similar to today with no significant pollen expected.
Is pollen expected to decrease in Nelson Caerphilly this week?
According to the five-day outlook, artemisia pollen levels will increase later in the week.
Which pollen types are currently active in Nelson Caerphilly?
On 10 October 2026, there are no significant pollen types in Nelson Caerphilly.
When is pollen season in Nelson Caerphilly?
How often is the Nelson Caerphilly pollen forecast updated?
The Nelson Caerphilly pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Nelson Caerphilly 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 Nelson Caerphilly 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 Nelson Caerphilly, 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).
