Collie pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Collie is moderate; acacia, cypress, and eucalyptus are moderate; grass is low.
Pollen Tomorrow
Tomorrow (21 September 2026) levels are similar to today.
7-Day Trend
Over the next week grass will increase; acacia, cypress, and eucalyptus will decrease.
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Pollen Risk
Today - 20 September
| Pollen species | Level | Value |
|---|---|---|
| Acacia (Acacia) | Moderate | 45/100 |
| Cypress (Cupressaceae) | Moderate | 47/100 |
| Eucalyptus (Myrtaceae) | Moderate | 46/100 |
| Grass (Poaceae) | Low | 19/100 |
Tomorrow - 21 September
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Acacia (Acacia) | Moderate | 33/100 | |
| Cypress (Cupressaceae) | Moderate | 36/100 | |
| Eucalyptus (Myrtaceae) | Moderate | 36/100 | |
| Grass (Poaceae) | Low | 9/100 |
Local Environmental Conditions
Collie sits within extensive jarrah forest, WA's classic timber and coal-mining country, with marri and wandoo woodland on the surrounding ranges; the forest understorey is rich in flowering heath shrubs, while the townsite carries planted eucalypts and exotic shade trees. Like much of the south-west and south, this area experiences a winter-spring wattle season followed by a grass-dominated pollen peak before summer's dry conditions take hold.
Collie, an inland coal-mining town amid jarrah forest in WA's southwest, experiences a Mediterranean pollen season with a more inland character than the nearby coast. Being away from moderating sea breezes, Collie can see slightly warmer spring days that bring forward flowering of surrounding jarrah and wandoo woodland from August, with grass pollen from cleared pasture and mine rehabilitation land peaking September to November. The region's forested surrounds keep background tree pollen present over a longer stretch than open wheatbelt towns.
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Resource Hub
Pollen forecast neighborhoods 3 neighborhoods
Sports venues in Collie 2 sports venues
Frequently Asked Questions About Pollen in Western Australia
Is pollen high in Collie right now?
On 20 September 2026, overall pollen levels in Collie are moderate. Acacia is the main contributor to airborne pollen, while cypress, myrtle, and grass remain at lower levels
Will pollen levels change in Collie tomorrow?
On 21 September 2026, pollen conditions in Collie will be similar to today, with acacia at moderate levels, cypress at moderate levels, myrtle at moderate levels, grass at low levels
Is pollen expected to decrease in Collie this week?
According to the five-day outlook, acacia, cypress, and myrtle pollen levels are expected to gradually decrease, while grass pollen will increase, suggesting mixed conditions later in the week.
Which pollen types are currently active in Collie?
On 20 September 2026, Acacia is the dominant pollen source in Collie. cypress, myrtle, and grass are also present but at lower levels.
When is pollen season in Collie?
How often is the Collie pollen forecast updated?
The Collie pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Collie 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 Collie 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 Collie, 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).
