St George Ranges pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in St George Ranges is moderate; cypress is moderate; eucalyptus is low.
Pollen Tomorrow
Tomorrow (21 September 2026) levels are similar to today.
7-Day Trend
Over the next week eucalyptus and grass will increase; cypress will decrease; acacia will remain stable.
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Pollen Risk
Today - 20 September
| Pollen species | Level | Value |
|---|---|---|
| Acacia (Acacia) | None | 0/100 |
| Cypress (Cupressaceae) | Moderate | 46/100 |
| Eucalyptus (Myrtaceae) | Low | 11/100 |
| Grass (Poaceae) | None | 0/100 |
Tomorrow - 21 September
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Acacia (Acacia) | None | 0/100 | |
| Cypress (Cupressaceae) | Moderate | 36/100 | |
| Eucalyptus (Myrtaceae) | Low | 2/100 | |
| Grass (Poaceae) | None | 0/100 |
Local Environmental Conditions
Here, just around the area, water here is bordered by river oak, a casuarina species known for prolific, far-carrying pollen. 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.
Water-edge river oak is usually the first allergenic tree active here, topping out well before most other trees start releasing pollen, around July and August. Grass pollen climbs toward a November peak, holding through the summer months before tapering off by late February. Actual peak timing can drift earlier or later depending on how the season's weather plays out.
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Frequently Asked Questions About Pollen in Western Australia
Is pollen high in St George Ranges right now?
On 20 September 2026, overall pollen levels in St George Ranges are moderate. Cypress is the main contributor to airborne pollen, while myrtle remain at lower levels
Will pollen levels change in St George Ranges tomorrow?
On 21 September 2026, pollen conditions in St George Ranges will be similar to today, with cypress at moderate levels, myrtle at low levels
Is pollen expected to decrease in St George Ranges this week?
According to the five-day outlook, 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 St George Ranges?
On 20 September 2026, Cypress is the dominant pollen source in St George Ranges. myrtle are also present but at lower levels. acacia and grass are not currently active.
When is pollen season in St George Ranges?
How often is the St George Ranges pollen forecast updated?
The St George Ranges pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in St George Ranges 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 St George Ranges 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 St George Ranges, 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).
