Joondalup pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Joondalup is moderate; acacia and cypress are moderate; eucalyptus and grass are low.
Pollen Tomorrow
Tomorrow (21 September 2026) cypress remains moderate, eucalyptus remains low, grass remains low, acacia declining.
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) | Moderate | 27/100 |
| Cypress (Cupressaceae) | Moderate | 50/100 |
| Eucalyptus (Myrtaceae) | Low | 8/100 |
| Grass (Poaceae) | Low | 4/100 |
Tomorrow - 21 September
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Acacia (Acacia) | Low | 24/100 | |
| Cypress (Cupressaceae) | Moderate | 47/100 | |
| Eucalyptus (Myrtaceae) | Low | 5/100 | |
| Grass (Poaceae) | Low | 1/100 |
Local Environmental Conditions
Joondalup sits on Perth's northern coastal plain amid Banksia woodland on deep sandy soils, one of the characteristic plant communities of the Swan Coastal Plain; surrounding suburban development retains bushland reserves of banksia, jarrah and marri alongside planted street trees. As is typical for the south-west and south, wattle flowering through winter gives way to a spring grass pollen peak that eases once the region's dry summer sets in.
Joondalup, in Perth's northern coastal corridor, follows Western Australia's typical Mediterranean pattern of a compressed pollen season from around August to November. Coastal proximity moderates temperatures and can keep pollen counts somewhat lower than in Perth's eastern suburbs, though the sandy coastal plain vegetation, including banksia and casuarina, still contributes meaningfully to spring tree pollen. Grass pollen from parks, verges and remnant bushland peaks through spring before Perth's long, dry, pollen-suppressing summer takes hold from December.
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Frequently Asked Questions About Pollen in Western Australia
Is pollen high in Joondalup right now?
On 20 September 2026, overall pollen levels in Joondalup are moderate. Acacia is the main contributor to airborne pollen, while cypress, myrtle, and grass remain at lower levels
Will pollen levels change in Joondalup tomorrow?
On 21 September 2026, pollen conditions in Joondalup will be different from today, with cypress at moderate levels, myrtle at low levels, grass at low levels and acacia continuing to decline
Is pollen expected to decrease in Joondalup this week?
According to the five-day outlook, acacia and cypress 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 Joondalup?
On 20 September 2026, Acacia is the dominant pollen source in Joondalup. cypress, myrtle, and grass are also present but at lower levels.
When is pollen season in Joondalup?
How often is the Joondalup pollen forecast updated?
The Joondalup pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Joondalup 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 Joondalup 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 Joondalup, 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).
