Mount Sheila pollen forecast — Possum Station neighborhood
Pollen Today
Today (20 September) pollen in Possum Station, Mount Sheila is low; cypress and grass are low.
Pollen Tomorrow
Tomorrow (21 September 2026) levels are similar to today.
7-Day Trend
Over the next week acacia will increase; cypress and grass will decrease; eucalyptus will remain stable.
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Pollen Risk
Today - 20 September
| Pollen species | Level | Value |
|---|---|---|
| Acacia (Acacia) | None | 0/100 |
| Cypress (Cupressaceae) | Low | 16/100 |
| Eucalyptus (Myrtaceae) | None | 0/100 |
| Grass (Poaceae) | Low | 8/100 |
Tomorrow - 21 September
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Acacia (Acacia) | None | 0/100 | |
| Cypress (Cupressaceae) | Low | 11/100 | |
| Eucalyptus (Myrtaceae) | None | 0/100 | |
| Grass (Poaceae) | Low | 5/100 |
Local Environmental Conditions
With open ground rather than woodland or water nearby, grass is likely the main pollen contributor in this area. Local readings for the surrounding area tend to follow this same general pattern. Ground-level conditions like local landscaping can nudge these figures slightly either way. Nearby weather stations report comparable trends across the broader stretch of the region.
Grass pollen climbs toward a November peak, and remaining a significant allergen right through summer until it eases in February. Exact peak dates shift by a few weeks year to year depending on temperature and rainfall. Daily pollen counts published for the wider region track this same seasonal rhythm closely.
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Pollen forecast neighborhoods 3 neighborhoods
Frequently Asked Questions About Pollen in Western Australia
Is pollen high in Mount Sheila right now?
On 20 September 2026, overall pollen levels in Mount Sheila are low. Grass is the main contributor to airborne pollen, while cypress remain at lower levels
Will pollen levels change in Mount Sheila tomorrow?
On 21 September 2026, pollen conditions in Mount Sheila will be similar to today, with grass at low levels, cypress at low levels
Is pollen expected to decrease in Mount Sheila this week?
According to the five-day outlook, grass and cypress pollen levels are expected to gradually decrease, while acacia pollen will increase, suggesting mixed conditions later in the week.
Which pollen types are currently active in Mount Sheila?
On 20 September 2026, Grass is the dominant pollen source in Mount Sheila. cypress are also present but at lower levels. acacia and myrtle are not currently active.
When is pollen season in Mount Sheila?
How often is the Mount Sheila pollen forecast updated?
The Mount Sheila pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Mount Sheila 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 Mount Sheila 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 Mount Sheila, 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).
