Helensburgh Rhu pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Helensburgh Rhu is low; mugwort is low.
Pollen Tomorrow
Tomorrow (21 September 2026) mugwort increasing.
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) | Low | 14/100 |
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 | 30/100 |
Local Environmental Conditions
Around Helensburgh Rhu, Scots pine and birch are the dominant species behind local tree pollen, with counts higher near parks than in the centre. Surrounding Argyll and Bute farmland contributes substantial grass and tree pollen, moving into town when winds blow from the east. It's a pattern shared by plenty of similarly sized towns nearby, shaped more by geography than anything unusual locally.
Locals in Helensburgh Rhu usually notice scots pine first, with birch not far behind it. Don't forget grass, either — it runs May to September and usually causes the most trouble in June and July. You'll usually see scots pine pollen from around April through June, while birch follows on from March to May. Worth factoring in if hay fever's ever been an issue for you here.
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Frequently Asked Questions About Pollen in Argyll and Bute
Is pollen high in Helensburgh Rhu right now?
On 20 September 2026, overall pollen levels in Helensburgh Rhu are low. Artemisia is the main contributor to airborne pollen
Will pollen levels change in Helensburgh Rhu tomorrow?
On 21 September 2026, pollen conditions in Helensburgh Rhu will be different from today, with artemisia increasing
Is pollen expected to decrease in Helensburgh Rhu 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 Helensburgh Rhu?
On 20 September 2026, Artemisia is the dominant pollen source in Helensburgh Rhu. willow, cypress, and grass are not currently active.
When is pollen season in Helensburgh Rhu?
How often is the Helensburgh Rhu pollen forecast updated?
The Helensburgh Rhu pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Helensburgh Rhu 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 Helensburgh Rhu 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 Helensburgh Rhu, 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).
