Lower Portland Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (10 October) pollen in Lower Portland is high; cypress and eucalyptus are high; acacia and mold (cladosporium) are moderate; grass and mold (alternaria) are low.
Pollen Tomorrow
Tomorrow (11 October 2026) eucalyptus remains high, mold (alternaria) remains low, mold (cladosporium) remains moderate, acacia declining, cypress declining, grass no longer expected.
7-Day Trend
Over the next week acacia, cypress, eucalyptus, and grass will increase; mold (alternaria) and mold (cladosporium) will decrease.
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Pollen Risk
Today - 10 October
| Pollen species | Level | Value |
|---|---|---|
| Acacia (Acacia) | Moderate | 44/100 |
| Cypress (Cupressaceae) | High | 54/100 |
| Eucalyptus (Myrtaceae) | High | 70/100 |
| Grass (Poaceae) | Low | 25/100 |
| Mold (Alternaria) | Low | 20/100 |
| Mold (Cladosporium) | Moderate | 33/100 |
Tomorrow - 11 October
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Acacia (Acacia) | Low | 11/100 | |
| Cypress (Cupressaceae) | Low | 21/100 | |
| Eucalyptus (Myrtaceae) | High | 56/100 | |
| Grass (Poaceae) | None | 0/100 | |
| Mold (Alternaria) | Low | 20/100 | |
| Mold (Cladosporium) | Moderate | 31/100 |
Local Environmental Conditions
The heart of Lower Portland is surrounded mainly by woodland, which covers around 69% of the nearby area, with some open water. With running water close by, riverside vegetation contributes to the local mix. With this much woodland around, trees are an important local pollen source. Beyond the trees, grasses matter a great deal, and pigweed is the main weed source.
Tree pollen comes first, peaking in late winter. Grass pollen follows, peaking in mid-spring and easing off by late summer. The season closes with pigweed from early summer into early fall. Rain is heaviest in fall, often giving short breaks from high pollen levels. Actual levels on any given day depend on the weather, with dry, breezy days the worst and wet days the mildest.
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Frequently Asked Questions About Pollen in New South Wales
Is pollen high in Lower Portland right now?
On 10 October 2026, overall pollen levels in Lower Portland are high. Cypress is the main contributor to airborne pollen, while myrtle, acacia, and grass remain at lower levels
Will pollen levels change in Lower Portland tomorrow?
On 11 October 2026, pollen conditions in Lower Portland will be different from today, with myrtle at high levels and acacia, cypress continuing to decline
Is pollen expected to decrease in Lower Portland this week?
According to the five-day outlook, grass, acacia, cypress, and myrtle pollen levels will increase later in the week.
Which pollen types are currently active in Lower Portland?
On 10 October 2026, Cypress is the dominant pollen source in Lower Portland. myrtle, acacia, and grass are also present but at lower levels.
When is pollen season in Lower Portland?
How often is the Lower Portland pollen forecast updated?
The Lower Portland pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Lower Portland 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 Lower Portland 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 Lower Portland, 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 pollen scores represent risk levels, not direct pollen measurements. Higher scores indicate higher risk.
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).
