Mount Clarence pollen forecast — Princess Royal Battery neighborhood
Pollen Today
Today (20 September) pollen in Princess Royal Battery, Mount Clarence is low; cypress and eucalyptus are low.
Pollen Tomorrow
Tomorrow (21 September 2026) cypress increasing, eucalyptus increasing, acacia at low levels, grass at low levels.
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) | None | 0/100 |
| Cypress (Cupressaceae) | Low | 16/100 |
| Eucalyptus (Myrtaceae) | Low | 13/100 |
| Grass (Poaceae) | None | 0/100 |
Tomorrow - 21 September
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Acacia (Acacia) | Low | 11/100 | |
| Cypress (Cupressaceae) | Moderate | 29/100 | |
| Eucalyptus (Myrtaceae) | Moderate | 26/100 | |
| Grass (Poaceae) | Low | 6/100 |
Local Environmental Conditions
Woods composed largely of eucalypt with wattle at the margins, a combination tied to sharp late-winter pollen spikes, close to this spot. A green space of mown lawn and planted plane trees, both feeding into local pollen counts, in the surrounding area. Year-to-year swings in rainfall and wind can shift this picture somewhat either way.
By late winter, eucalypt and wattle in the woods take over, typically landing in August and September. Grass pollen takes over next, building to a peak around November, with the season extending well into summer before finally winding down in February. Daily pollen counts published for the wider region track this same seasonal rhythm closely.
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Frequently Asked Questions About Pollen in Western Australia
Is pollen high in Mount Clarence right now?
On 20 September 2026, overall pollen levels in Mount Clarence are low. Cypress is the main contributor to airborne pollen, while myrtle remain at lower levels
Will pollen levels change in Mount Clarence tomorrow?
On 21 September 2026, pollen conditions in Mount Clarence will be different from today, with acacia at low levels, grass at low levels and cypress, myrtle increasing
Is pollen expected to decrease in Mount Clarence 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 Mount Clarence?
On 20 September 2026, Cypress is the dominant pollen source in Mount Clarence. myrtle are also present but at lower levels. acacia and grass are not currently active.
When is pollen season in Mount Clarence?
How often is the Mount Clarence pollen forecast updated?
The Mount Clarence pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Mount Clarence 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 Clarence 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 Clarence, 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).
