Gwelup pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Gwelup 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 acacia, eucalyptus, and grass will increase; cypress will decrease.
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Pollen Risk
Today - 20 September
| Pollen species | Level | Value |
|---|---|---|
| Acacia (Acacia) | Low | 7/100 |
| Cypress (Cupressaceae) | Low | 14/100 |
| Eucalyptus (Myrtaceae) | Low | 5/100 |
| Grass (Poaceae) | Low | 3/100 |
Tomorrow - 21 September
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Acacia (Acacia) | Low | 5/100 | |
| Cypress (Cupressaceae) | Low | 12/100 | |
| Eucalyptus (Myrtaceae) | Low | 3/100 | |
| Grass (Poaceae) | Low | 1/100 |
Local Environmental Conditions
Nearby, not far from here, river oak thrives along the damp bank, a classic riparian wind-pollinator in this part of Australia. This area, not far from here, has tree cover made up mostly of eucalypt and wattle, wattle in particular a well-known seasonal trigger. This area, within the local area, has parkland with regularly mown grass and planted plane trees, both sources of seasonal pollen.
The waterside river oak is consistently first to release pollen each year, arriving ahead of the rest of the season, cresting around mid-winter. Woodland eucalypt and wattle pick up the pace next, through late winter into spring, building to its sharpest point across August and September. Grass pollen becomes the dominant allergen through spring, peaking in November, and remaining a significant allergen right through summer until it eases in February.
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Frequently Asked Questions About Pollen in Western Australia
Is pollen high in Gwelup right now?
On 20 September 2026, overall pollen levels in Gwelup are low. Acacia is the main contributor to airborne pollen, while cypress, myrtle, and grass remain at lower levels
Will pollen levels change in Gwelup tomorrow?
On 21 September 2026, pollen conditions in Gwelup will be similar to today, with acacia at low levels, cypress at low levels, myrtle at low levels, grass at low levels
Is pollen expected to decrease in Gwelup this week?
According to the five-day outlook, cypress pollen levels are expected to gradually decrease, while acacia, myrtle, and grass pollen will increase, suggesting mixed conditions later in the week.
Which pollen types are currently active in Gwelup?
On 20 September 2026, Acacia is the dominant pollen source in Gwelup. cypress, myrtle, and grass are also present but at lower levels.
When is pollen season in Gwelup?
How often is the Gwelup pollen forecast updated?
The Gwelup pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Gwelup 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 Gwelup 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 Gwelup, 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).
