Subiaco pollen forecast — Jolimont neighborhood
Pollen Today
Today (20 September) pollen in Jolimont, Subiaco is low; acacia, cypress, 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 | 6/100 |
| Cypress (Cupressaceae) | Low | 13/100 |
| Eucalyptus (Myrtaceae) | Low | 3/100 |
| Grass (Poaceae) | Low | 2/100 |
Tomorrow - 21 September
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Acacia (Acacia) | Low | 5/100 | |
| Cypress (Cupressaceae) | Low | 12/100 | |
| Eucalyptus (Myrtaceae) | Low | 2/100 | |
| Grass (Poaceae) | Low | 1/100 |
Local Environmental Conditions
This area, just around the area, has the waterway's edge supports wattle and casuarina, species known for potent, wind-carried pollen. Tree cover made up mostly of plane tree and eucalypt, both significant spring allergen sources, not far from here. Here, close to this spot, a park whose turf grass and ornamental plantings feed local grass and plantain and weed pollen levels.
In Jolimont, temperatures climbing to 16.5°C by September likely mark the start of the main pollen release, with humidity around 74% helping keep counts airborne. Warmer conditions by December (22.4°C, 63% humidity) sustain grass pollen through the season, before rainfall of 22mm in March and cooling toward 16.9°C in June bring the season to a close.
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Frequently Asked Questions About Pollen in Western Australia
Is pollen high in Subiaco right now?
On 20 September 2026, overall pollen levels in Subiaco are low. Grass is the main contributor to airborne pollen, while acacia, cypress, and myrtle remain at lower levels
Will pollen levels change in Subiaco tomorrow?
On 21 September 2026, pollen conditions in Subiaco will be similar to today, with grass at low levels, acacia at low levels, cypress at low levels, myrtle at low levels
Is pollen expected to decrease in Subiaco this week?
According to the five-day outlook, acacia and cypress pollen levels are expected to gradually decrease, while grass and myrtle pollen will increase, suggesting mixed conditions later in the week.
Which pollen types are currently active in Subiaco?
On 20 September 2026, Grass is the dominant pollen source in Subiaco. acacia, cypress, and myrtle are also present but at lower levels.
When is pollen season in Subiaco?
How often is the Subiaco pollen forecast updated?
The Subiaco pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Subiaco 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 Subiaco 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 Subiaco, 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).
