Greenough pollen forecast — The Leaning Tree neighborhood
Pollen Today
Today (20 September) pollen in The Leaning Tree, Greenough is low; acacia, cypress, 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 | 11/100 |
| Cypress (Cupressaceae) | Low | 11/100 |
| Eucalyptus (Myrtaceae) | None | 0/100 |
| Grass (Poaceae) | Low | 15/100 |
Tomorrow - 21 September
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Acacia (Acacia) | Low | 11/100 | |
| Cypress (Cupressaceae) | Low | 10/100 | |
| Eucalyptus (Myrtaceae) | None | 0/100 | |
| Grass (Poaceae) | Low | 16/100 |
Local Environmental Conditions
Absent nearby tree cover or a waterway, wild grass growing on open land likely shapes the local pollen profile most. The general pattern described here holds fairly steady across nearby areas with similar land cover. Local wind exposure and land use can shift the exact mix slightly from block to block.
Spring brings rising grass pollen that crests in November, then holding at a high level well into January before easing off. Actual peak timing can drift earlier or later depending on how the season's weather plays out. Neighboring parts of the region typically see this same sequence with only minor timing shifts.
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Frequently Asked Questions About Pollen in Western Australia
Is pollen high in Greenough right now?
On 20 September 2026, overall pollen levels in Greenough are low. Acacia is the main contributor to airborne pollen, while cypress and grass remain at lower levels
Will pollen levels change in Greenough tomorrow?
On 21 September 2026, pollen conditions in Greenough will be similar to today, with acacia at low levels, cypress at low levels, grass at low levels
Is pollen expected to decrease in Greenough 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 Greenough?
On 20 September 2026, Acacia is the dominant pollen source in Greenough. cypress and grass are also present but at lower levels. myrtle are not currently active.
When is pollen season in Greenough?
How often is the Greenough pollen forecast updated?
The Greenough pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Greenough 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 Greenough 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 Greenough, 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).
