Chigwell pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Chigwell is moderate; mugwort is moderate.
Pollen Tomorrow
Tomorrow (21 September 2026) mugwort increasing.
7-Day Trend
Over the next week grass and mugwort will increase; cypress and willow will remain stable.
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Features and forecast availability vary by region.
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) | Moderate | 37/100 |
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) | None | 0/100 | |
| Willow (Salicaceae) | None | 0/100 | |
| Mugwort (Artemisia) | High | 51/100 |
Local Environmental Conditions
In Chigwell, sycamore and oak dominate the local tree pollen picture, with parks and tree-lined residential streets offering more exposure than the compact centre. The wider Essex countryside supplies additional tree and grass pollen, particularly when onshore breezes carry it toward the built-up area. This combination means residents feel both urban and rural pollen sources depending on which way the wind's blowing.
Want to know what triggers spring allergies in Chigwell? Start with sycamore, then oak. Then grass pollen takes the baton from May all the way to September, usually peaking in June and July — that's when most people really feel it. Expect sycamore pollen roughly from April to June, then oak carries on from April until May. Worth keeping an eye on the forecast if you're sensitive.
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Frequently Asked Questions About Pollen in Essex
Is pollen high in Chigwell right now?
On 20 September 2026, overall pollen levels in Chigwell are moderate. Artemisia is the main contributor to airborne pollen
Will pollen levels change in Chigwell tomorrow?
On 21 September 2026, pollen conditions in Chigwell will be different from today, with artemisia increasing
Is pollen expected to decrease in Chigwell this week?
According to the five-day outlook, grass and artemisia pollen levels will increase later in the week.
Which pollen types are currently active in Chigwell?
On 20 September 2026, Artemisia is the dominant pollen source in Chigwell. cypress, grass, and willow are not currently active.
When is pollen season in Chigwell?
How often is the Chigwell pollen forecast updated?
The Chigwell pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Chigwell 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 Chigwell 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 Chigwell, 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. |
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).
