St Ives pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in St Ives is moderate; mugwort is moderate.
Pollen Tomorrow
Tomorrow (21 September 2026) mugwort increasing, grass at low levels.
7-Day Trend
Over the next week grass will increase; mugwort will decrease; 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 | 48/100 |
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) | Low | 1/100 | |
| Willow (Salicaceae) | None | 0/100 | |
| Mugwort (Artemisia) | High | 55/100 |
Local Environmental Conditions
Fields and hedgerows just outside town push grass pollen counts up noticeably once southwesterly winds set in. On top of that, oak and plane are the two species driving most tree pollen in St Ives, especially around parks and green corridors. The relatively open, low-lying landscape lets pollen disperse readily across the area through the season.
Locals in St Ives usually notice oak first, with plane not far behind it. Grass then takes over from May right through September, peaking around June and July for most people. Expect oak pollen roughly from April to May, then plane carries on from April until June. Worth keeping an eye on the forecast if you're sensitive.
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Frequently Asked Questions About Pollen in Cornwall
Is pollen high in St Ives right now?
On 20 September 2026, overall pollen levels in St Ives are moderate. Artemisia is the main contributor to airborne pollen
Will pollen levels change in St Ives tomorrow?
On 21 September 2026, pollen conditions in St Ives will be different from today, with grass at low levels and artemisia increasing
Is pollen expected to decrease in St Ives this week?
According to the five-day outlook, artemisia pollen levels are expected to gradually decrease, while grass pollen will increase, suggesting mixed conditions later in the week.
Which pollen types are currently active in St Ives?
On 20 September 2026, Artemisia is the dominant pollen source in St Ives. cypress, grass, and willow are not currently active.
When is pollen season in St Ives?
How often is the St Ives pollen forecast updated?
The St Ives pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in St Ives 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 St Ives 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 St Ives, 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).
