Fremantle pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Fremantle is low; acacia and cypress are low.
Pollen Tomorrow
Tomorrow (21 September 2026) levels are similar to today.
7-Day Trend
Over the next week acacia and cypress will increase; eucalyptus and grass will remain stable.
Explore Forecasts
Air Quality
Pollen for Neighborhoods
Air Quality in Other Cities
Get More in Our App
Local pollen and air quality forecasts, interactive pollen maps and route profiles
Features and forecast availability vary by region.
Pollen Risk
Today - 20 September
| Pollen species | Level | Value |
|---|---|---|
| Acacia (Acacia) | Low | 3/100 |
| Cypress (Cupressaceae) | Low | 9/100 |
| Eucalyptus (Myrtaceae) | None | 0/100 |
| Grass (Poaceae) | None | 0/100 |
Tomorrow - 21 September
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Acacia (Acacia) | Low | 2/100 | |
| Cypress (Cupressaceae) | Low | 7/100 | |
| Eucalyptus (Myrtaceae) | None | 0/100 | |
| Grass (Poaceae) | None | 0/100 |
Local Environmental Conditions
Fremantle sits on Swan River limestone country, where coastal tuart and Rottnest Island pine woodland once dominated the dunes; today the port city mixes planted eucalypts and Mediterranean-style street trees with pockets of native coastal heath along its remaining foreshore reserves. Following the Mediterranean climate pattern, wattle and eucalypt flower through winter and early spring, with grass pollen becoming dominant in the lead-up to the region's characteristically dry summer.
Fremantle, at the mouth of the Swan River, has a Mediterranean pollen season concentrated into the cooler, wetter months of the year, roughly August to November, before Perth's long dry summer suppresses growth. Coastal winds off the Indian Ocean tend to keep pollen counts a little lower here than inland Perth suburbs, though easterly winds blowing off the drier hinterland can occasionally push counts up. Tree pollen from casuarina and introduced species opens the season, with grass pollen from parks and verges following into spring.
Get pollen & AQ on Strava
Follow your environmental exposure and performance with the free Airmine-Strava integration. See your pollen and air quality exposure for every Strava activity.
Resource Hub
Pollen forecast neighborhoods 27 neighborhoods
Sports venues in Fremantle 2 sports venues
Frequently Asked Questions About Pollen in Western Australia
Is pollen high in Fremantle right now?
On 20 September 2026, overall pollen levels in Fremantle are low. Acacia is the main contributor to airborne pollen, while cypress remain at lower levels
Will pollen levels change in Fremantle tomorrow?
On 21 September 2026, pollen conditions in Fremantle will be similar to today, with acacia at low levels, cypress at low levels
Is pollen expected to decrease in Fremantle 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 Fremantle?
On 20 September 2026, Acacia is the dominant pollen source in Fremantle. cypress are also present but at lower levels. myrtle and grass are not currently active.
When is pollen season in Fremantle?
How often is the Fremantle pollen forecast updated?
The Fremantle pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Fremantle 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 Fremantle 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 Fremantle, 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).
