City of Swan Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (10 October) pollen in City of Swan is high; acacia is high; cypress, eucalyptus, and mold (cladosporium) are moderate; grass and mold (alternaria) are low.
Pollen Tomorrow
Tomorrow (11 October 2026) grass remains low, mold (alternaria) remains low, mold (cladosporium) remains moderate, acacia declining, cypress declining, eucalyptus declining.
7-Day Trend
Over the next week acacia, cypress, eucalyptus, grass, mold (alternaria), and mold (cladosporium) will increase.
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Pollen Risk
Today - 10 October
| Pollen species | Level | Value |
|---|---|---|
| Acacia (Acacia) | High | 56/100 |
| Cypress (Cupressaceae) | Moderate | 42/100 |
| Eucalyptus (Myrtaceae) | Moderate | 34/100 |
| Grass (Poaceae) | Low | 25/100 |
| Mold (Alternaria) | Low | 17/100 |
| Mold (Cladosporium) | Moderate | 32/100 |
Tomorrow - 11 October
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Acacia (Acacia) | Moderate | 40/100 | |
| Cypress (Cupressaceae) | Low | 25/100 | |
| Eucalyptus (Myrtaceae) | Low | 18/100 | |
| Grass (Poaceae) | Low | 10/100 | |
| Mold (Alternaria) | Low | 17/100 | |
| Mold (Cladosporium) | Moderate | 34/100 |
Local Environmental Conditions
Around 82% of the area near the center of City of Swan is woodland, with some open grassland. The damp ground beside a watercourse nearby supports trees, shrubs and reeds, adding to local pollen. So much tree cover makes trees an important source of pollen locally. Grass pollen is significant here, and pigweed contributes weed pollen.
Flowering trees bring the first pollen of the year in early spring. Then come the grasses, strongest in late spring and fading by early fall. Pigweed brings a final peak from early summer into early fall. Rain is heaviest in winter, often giving short breaks from high pollen levels. Actual levels on any given day depend on the weather, with dry, breezy days the worst and wet days the mildest.
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Pollen forecast neighborhoods 31 neighborhoods
Frequently Asked Questions About Pollen in Western Australia
Is pollen high in City of Swan right now?
On 10 October 2026, overall pollen levels in City of Swan are high. Acacia is the main contributor to airborne pollen, while cypress, myrtle, and grass remain at lower levels
Will pollen levels change in City of Swan tomorrow?
On 11 October 2026, pollen conditions in City of Swan will be different from today, with grass at low levels and acacia, cypress, myrtle continuing to decline
Is pollen expected to decrease in City of Swan this week?
According to the five-day outlook, grass, acacia, cypress, and myrtle pollen levels will increase later in the week.
Which pollen types are currently active in City of Swan?
On 10 October 2026, Acacia is the dominant pollen source in City of Swan. cypress, myrtle, and grass are also present but at lower levels.
When is pollen season in City of Swan?
How often is the City of Swan pollen forecast updated?
The City of Swan pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in City of Swan 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 City of Swan 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 City of Swan, 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 pollen scores represent risk levels, not direct pollen measurements. Higher scores indicate higher risk.
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).
