Lees Oldham pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Lees Oldham is none
Pollen Tomorrow
Tomorrow (21 September 2026) mugwort at moderate levels.
7-Day Trend
Over the next week mugwort will decrease; cypress, grass, 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) | None | 0/100 |
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) | Moderate | 26/100 |
Local Environmental Conditions
Fields and hedgerows just outside town push grass pollen counts up noticeably once moist Atlantic fronts set in. On top of that, rowan and birch are the two species driving most tree pollen in Lees Oldham, especially around parks and green corridors. Locals with allergies tend to plan around two peaks a year rather than one long stretch.
In Lees Oldham, the pollen calendar starts with rowan and rolls straight into birch. Grass season overlaps a lot of this too, running May through September and peaking mid-summer. Rowan tends to release pollen between May and June, and birch keeps things going from March right through to May. Worth keeping an eye on the forecast if you're sensitive.
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Frequently Asked Questions About Pollen in Oldham
Is pollen high in Lees Oldham right now?
Currently, there is no significant pollen in Lees Oldham.
Will pollen levels change in Lees Oldham tomorrow?
On 21 September 2026, pollen conditions in Lees Oldham will be different from today, with artemisia at moderate levels
Is pollen expected to decrease in Lees Oldham 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 Lees Oldham?
On 20 September 2026, there are no significant pollen types in Lees Oldham.
When is pollen season in Lees Oldham?
How often is the Lees Oldham pollen forecast updated?
The Lees Oldham pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Lees Oldham 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 Lees Oldham 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 Lees Oldham, 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).
