Dereham Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (11 October) pollen in Dereham is low; mold (alternaria) and mold (cladosporium) are low.
Pollen Tomorrow
Tomorrow (12 October 2026) mold (alternaria) remains low, mold (cladosporium) remains low, mugwort at moderate levels.
7-Day Trend
Over the next week mold (alternaria) and mold (cladosporium) will increase; mugwort will decrease; grass and willow will remain stable.
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Pollen Risk
Today - 11 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 | 10/100 |
| Mold (Cladosporium) | Low | 24/100 |
Tomorrow - 12 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) | Moderate | 27/100 | |
| Mold (Alternaria) | Low | 10/100 | |
| Mold (Cladosporium) | Low | 22/100 |
Local Environmental Conditions
Built-up land and woodland share the area around the center of Dereham, plus some open grassland. Woodland on all sides makes trees an important local pollen source. Grass pollen is significant here, and plantain contributes weed pollen. Locally, street trees, parks and lawns are the main sources in the built-up parts.
Tree pollen comes first, peaking in mid-spring. Then come the grasses, strongest in early summer and fading by early fall. Plantain brings a final peak from late spring into late summer. In warm, humid weather through summer, mold spores add to the mix, especially after rain. By late fall, as temperatures fall to around 10°C, pollen levels are low again.
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Frequently Asked Questions About Pollen in Norfolk
Is pollen high in Dereham right now?
Currently, there is no significant pollen in Dereham.
Will pollen levels change in Dereham tomorrow?
On 12 October 2026, pollen conditions in Dereham will be different from today, with artemisia at moderate levels
Is pollen expected to decrease in Dereham 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 Dereham?
On 11 October 2026, there are no significant pollen types in Dereham.
When is pollen season in Dereham?
How often is the Dereham pollen forecast updated?
The Dereham pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Dereham 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 Dereham 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 Dereham, 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).
