Swanbourne pollen forecast — Cottesloe Golf Course neighborhood
Pollen Today
Today (20 September) pollen in Cottesloe Golf Course, Swanbourne is low; acacia, cypress, and eucalyptus are low.
Pollen Tomorrow
Tomorrow (21 September 2026) levels are similar to today.
7-Day Trend
Over the next week eucalyptus and grass will increase; acacia and cypress will decrease.
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Pollen Risk
Today - 20 September
| Pollen species | Level | Value |
|---|---|---|
| Acacia (Acacia) | Low | 9/100 |
| Cypress (Cupressaceae) | Low | 13/100 |
| Eucalyptus (Myrtaceae) | Low | 3/100 |
| Grass (Poaceae) | None | 0/100 |
Tomorrow - 21 September
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Acacia (Acacia) | Low | 8/100 | |
| Cypress (Cupressaceae) | Low | 11/100 | |
| Eucalyptus (Myrtaceae) | Low | 2/100 | |
| Grass (Poaceae) | None | 0/100 |
Local Environmental Conditions
The waterway's edge supports river oak, a species whose fine pollen travels well beyond the immediate bank; this sits within the neighborhood. A stand of eucalypt with wattle through the understorey, wattle ranked among the region's sharpest allergens, close by. The general pattern described here holds fairly steady across nearby areas with similar land cover.
At Cottesloe Golf Course, once river oak fades, eucalypt and wattle in the woods carry the season forward, reaching maximum intensity across the August-September window. The water-adjacent river oak is an early riser, climbing steadily from mid-winter into September. Grass pollen counts rise through spring, reaching their peak around November, before staying elevated through the summer months into late January.
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Frequently Asked Questions About Pollen in Western Australia
Is pollen high in Swanbourne right now?
On 20 September 2026, overall pollen levels in Swanbourne are low. Cypress is the main contributor to airborne pollen, while myrtle and acacia remain at lower levels
Will pollen levels change in Swanbourne tomorrow?
On 21 September 2026, pollen conditions in Swanbourne will be similar to today, with cypress at low levels, myrtle at low levels, acacia at low levels
Is pollen expected to decrease in Swanbourne this week?
According to the five-day outlook, cypress and acacia pollen levels are expected to gradually decrease, while myrtle and grass pollen will increase, suggesting mixed conditions later in the week.
Which pollen types are currently active in Swanbourne?
On 20 September 2026, Cypress is the dominant pollen source in Swanbourne. myrtle and acacia are also present but at lower levels. grass are not currently active.
When is pollen season in Swanbourne?
How often is the Swanbourne pollen forecast updated?
The Swanbourne pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Swanbourne 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 Swanbourne 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 Swanbourne, 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).
