Casula pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Casula is moderate; acacia is moderate; cypress and eucalyptus are low.
Pollen Tomorrow
Tomorrow (21 September 2026) acacia declining, cypress no longer expected, eucalyptus no longer expected.
7-Day Trend
Over the next week acacia, cypress, and eucalyptus will increase; grass will remain stable.
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Pollen Risk
Today - 20 September
| Pollen species | Level | Value |
|---|---|---|
| Acacia (Acacia) | Moderate | 41/100 |
| Cypress (Cupressaceae) | Low | 23/100 |
| Eucalyptus (Myrtaceae) | Low | 12/100 |
| Grass (Poaceae) | None | 0/100 |
Tomorrow - 21 September
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Acacia (Acacia) | Low | 16/100 | |
| Cypress (Cupressaceae) | None | 0/100 | |
| Eucalyptus (Myrtaceae) | None | 0/100 | |
| Grass (Poaceae) | None | 0/100 |
Local Environmental Conditions
Located close to this spot, this area has eucalypt dominating the treeline with wattle scattered through it, both contributing to the season's pollen load. Located close to home here, this area has a nearby park's turf and plane trees layer additional pollen onto the seasonal grass count. Neighboring areas with similar land cover tend to show a closely matching pollen mix.
Eucalypt and wattle in the woods pick up where river oak leaves off, climbing steadily through late winter to a peak in August or September. Grass pollen takes over next, building to a peak around November, holding through the summer months before tapering off by late February. Regional pollen monitoring generally reflects this same pattern across nearby areas.
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Frequently Asked Questions About Pollen in New South Wales
Is pollen high in Casula right now?
On 20 September 2026, overall pollen levels in Casula are moderate. Acacia is the main contributor to airborne pollen, while cypress and myrtle remain at lower levels
Will pollen levels change in Casula tomorrow?
On 21 September 2026, pollen conditions in Casula will be different from today, with acacia continuing to decline
Is pollen expected to decrease in Casula this week?
According to the five-day outlook, acacia, cypress, and myrtle pollen levels will increase later in the week.
Which pollen types are currently active in Casula?
On 20 September 2026, Acacia is the dominant pollen source in Casula. cypress and myrtle are also present but at lower levels. grass are not currently active.
When is pollen season in Casula?
How often is the Casula pollen forecast updated?
The Casula pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Casula 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 Casula 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 Casula, 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).
