Wembley Downs pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Wembley Downs is moderate; cypress is moderate; 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 and cypress will decrease.
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Pollen Risk
Today - 20 September
| Pollen species | Level | Value |
|---|---|---|
| Acacia (Acacia) | Low | 22/100 |
| Cypress (Cupressaceae) | Moderate | 37/100 |
| Eucalyptus (Myrtaceae) | Low | 9/100 |
| Grass (Poaceae) | Low | 2/100 |
Tomorrow - 21 September
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Acacia (Acacia) | Low | 20/100 | |
| Cypress (Cupressaceae) | Moderate | 34/100 | |
| Eucalyptus (Myrtaceae) | Low | 8/100 | |
| Grass (Poaceae) | Low | 1/100 |
Local Environmental Conditions
Nearby, within the neighborhood, river oak grows along the bank here, releasing fine wind-borne pollen typical of casuarina species. Here, in the surrounding area, woods composed largely of eucalypt with wattle at the margins, a combination tied to sharp late-winter pollen spikes. Located close by, this area has maintained parkland where turf grass and ornamental plane trees add to the local pollen mix.
River oak by the water is typically first out of the gate, reaching its high point sometime in late winter or early spring. Eucalypt and wattle nearby take over the pollen calendar through late winter, climbing steadily through late winter to a peak in August or September. Grass pollen rises through spring toward a November high point, holding through the summer months before tapering off by late February.
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Sports venues in Wembley Downs 1 sports venue
Frequently Asked Questions About Pollen in Western Australia
Is pollen high in Wembley Downs right now?
On 20 September 2026, overall pollen levels in Wembley Downs are moderate. Cypress is the main contributor to airborne pollen, while acacia, myrtle, and grass remain at lower levels
Will pollen levels change in Wembley Downs tomorrow?
On 21 September 2026, pollen conditions in Wembley Downs will be similar to today, with acacia at low levels, cypress at moderate levels, myrtle at low levels, grass at low levels
Is pollen expected to decrease in Wembley Downs 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 Wembley Downs?
On 20 September 2026, Cypress is the dominant pollen source in Wembley Downs. acacia, myrtle, and grass are also present but at lower levels.
When is pollen season in Wembley Downs?
How often is the Wembley Downs pollen forecast updated?
The Wembley Downs pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Wembley Downs 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 Wembley Downs 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 Wembley Downs, 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).
