Perth pollen forecast — Swan River Seaplanes neighborhood
Pollen Today
Today (20 September) pollen in Swan River Seaplanes, Perth is low; acacia, eucalyptus, and grass 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 will decrease; cypress will remain stable.
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Pollen Risk
Today - 20 September
| Pollen species | Level | Value |
|---|---|---|
| Acacia (Acacia) | Low | 3/100 |
| Cypress (Cupressaceae) | None | 0/100 |
| Eucalyptus (Myrtaceae) | Low | 3/100 |
| Grass (Poaceae) | Low | 2/100 |
Tomorrow - 21 September
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Acacia (Acacia) | Low | 3/100 | |
| Cypress (Cupressaceae) | None | 0/100 | |
| Eucalyptus (Myrtaceae) | Low | 2/100 | |
| Grass (Poaceae) | Low | 2/100 |
Local Environmental Conditions
This area, a short distance from here, has river oak thrives along the damp bank, a classic riparian wind-pollinator in this part of Australia. Here, within the neighborhood's edge, woods composed largely of eucalypt with wattle at the margins, a combination tied to sharp late-winter pollen spikes. This area, within the neighborhood's edge, has a park whose lawns and ornamental plane trees quietly add to local pollen levels.
Near the bank, river oak leads the seasonal calendar, hitting its peak before most other trees flower, around July into September. Once river oak fades, eucalypt and wattle in the woods carry the season forward, reaching its high point through August and into October. Grass pollen builds through spring and peaks in November, holding through the summer months before tapering off by late February.
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Frequently Asked Questions About Pollen in Western Australia
Is pollen high in Perth right now?
On 20 September 2026, overall pollen levels in Perth are low. Grass is the main contributor to airborne pollen, while acacia and myrtle remain at lower levels
Will pollen levels change in Perth tomorrow?
On 21 September 2026, pollen conditions in Perth will be similar to today, with grass at low levels, acacia at low levels, myrtle at low levels
Is pollen expected to decrease in Perth this week?
According to the five-day outlook, acacia pollen levels are expected to gradually decrease, while grass and myrtle pollen will increase, suggesting mixed conditions later in the week.
Which pollen types are currently active in Perth?
On 20 September 2026, Grass is the dominant pollen source in Perth. acacia and myrtle are also present but at lower levels. cypress are not currently active.
When is pollen season in Perth?
How often is the Perth pollen forecast updated?
The Perth pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Perth 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 Perth 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 Perth, 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).
