Middle Harbour Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (10 October) pollen in Middle Harbour is moderate; acacia, cypress, eucalyptus, and mold (cladosporium) are moderate; mold (alternaria) is low.
Pollen Tomorrow
Tomorrow (11 October 2026) mold (alternaria) remains low, cypress declining, eucalyptus declining, mold (cladosporium) declining, acacia 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 | 31/100 |
| Cypress (Cupressaceae) | Moderate | 36/100 |
| Eucalyptus (Myrtaceae) | Moderate | 47/100 |
| Grass (Poaceae) | None | 0/100 |
| Mold (Alternaria) | Low | 16/100 |
| Mold (Cladosporium) | Moderate | 28/100 |
Tomorrow - 11 October
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Acacia (Acacia) | None | 0/100 | |
| Cypress (Cupressaceae) | Low | 5/100 | |
| Eucalyptus (Myrtaceae) | Low | 16/100 | |
| Grass (Poaceae) | None | 0/100 | |
| Mold (Alternaria) | Low | 10/100 | |
| Mold (Cladosporium) | Low | 25/100 |
Local Environmental Conditions
Middle Harbour is surrounded mainly by open water, which covers around 53% of the nearby area, with a good deal of woodland and some built-up land. Plane tree is the most prominent allergenic tree in the wider area, with olive and oak also present. Pellitory is unusually common here compared with most other locations, making it a particularly important local pollen source.
Plane tree, olive and oak lead the season in early spring, as temperatures climb to around 15°C, and tree pollen reaches its peak. Grasses take over in mid-spring, with temperatures around 20°C, and their pollen lingers into mid-fall. Pellitory and pigweed bring the strongest peak of the year from late winter into early winter. Mold spores join in from midsummer into early fall, when damp, warm spells let them thrive.
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Frequently Asked Questions About Pollen in New South Wales
Is pollen high in Middle Harbour right now?
On 10 October 2026, overall pollen levels in Middle Harbour are moderate. Acacia is the main contributor to airborne pollen, while cypress and myrtle remain at lower levels
Will pollen levels change in Middle Harbour tomorrow?
On 11 October 2026, pollen conditions in Middle Harbour will be different from today, with cypress, myrtle continuing to decline
Is pollen expected to decrease in Middle Harbour this week?
According to the five-day outlook, acacia, cypress, myrtle, and grass pollen levels will increase later in the week.
Which pollen types are currently active in Middle Harbour?
On 10 October 2026, Acacia is the dominant pollen source in Middle Harbour. cypress and myrtle are also present but at lower levels. grass are not currently active.
When is pollen season in Middle Harbour?
How often is the Middle Harbour pollen forecast updated?
The Middle Harbour pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Middle Harbour 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 Middle Harbour 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 Middle Harbour, 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).
