Perth pollen forecast — Fremantle Harbour neighborhood
Pollen Today
Today (16 September) pollen in Fremantle Harbour, Perth is low; acacia and cypress are low.
Pollen Tomorrow
Tomorrow (17 September 2026) acacia no longer expected, cypress no longer expected.
7-Day Trend
Over the next week acacia and cypress will increase; eucalyptus and grass will remain stable.
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Pollen Risk
Today - 16 September
| Pollen species | Level | Value |
|---|---|---|
| Acacia (Acacia) | Low | 6/100 |
| Cypress (Cupressaceae) | Low | 9/100 |
| Eucalyptus (Myrtaceae) | None | 0/100 |
| Grass (Poaceae) | None | 0/100 |
Tomorrow - 17 September
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Acacia (Acacia) | None | 0/100 | |
| Cypress (Cupressaceae) | None | 0/100 | |
| Eucalyptus (Myrtaceae) | None | 0/100 | |
| Grass (Poaceae) | None | 0/100 |
Local Environmental Conditions
Fremantle Harbour, at the mouth of the Swan River, carries heritage plantings of Norfolk Island pine and Moreton Bay fig along its historic streetscape and harbour foreshore, reflecting the port town's colonial-era landscaping. Limited native bushland survives amid the dense port and residential development. These heritage pine and fig plantings are the defining vegetation feature of Fremantle's otherwise built-up harbourside pollen profile.
Fremantle Harbour's exposed coastal position, known for its strong afternoon sea breeze, the 'Fremantle Doctor', tends to keep pollen counts lower than inland Perth suburbs, wattle flowering from August and grass pollen from the port area's parks and reserves peaking September-October. That reliable onshore wind is a genuine asset here, dispersing pollen more consistently than in more sheltered suburbs. Historic Monument Hill's gardens add a further pocket of tree pollen exposure away from the harbour's open water.
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Frequently Asked Questions About Pollen in Western Australia
Is pollen high in Perth right now?
On 16 September 2026, overall pollen levels in Perth are low. Acacia is the main contributor to airborne pollen, while cypress remain at lower levels
Will pollen levels change in Perth tomorrow?
On 17 September 2026, pollen conditions in Perth will be similar to today with no significant pollen expected.
Is pollen expected to decrease in Perth this week?
According to the five-day outlook, acacia and cypress pollen levels will increase later in the week.
Which pollen types are currently active in Perth?
On 16 September 2026, Acacia is the dominant pollen source in Perth. cypress are also present but at lower levels. grass and myrtle 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).
