Sydney pollen forecast — Mosman neighborhood
Pollen Today
Today (16 September) pollen in Mosman, Sydney is low; acacia and cypress are low.
Pollen Tomorrow
Tomorrow (17 September 2026) acacia remains low, cypress remains low, eucalyptus at low levels.
7-Day Trend
Over the next week acacia, cypress, and eucalyptus will decrease; grass will remain stable.
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Pollen Risk
Today - 16 September
| Pollen species | Level | Value |
|---|---|---|
| Acacia (Acacia) | Low | 1/100 |
| Cypress (Cupressaceae) | Low | 7/100 |
| Eucalyptus (Myrtaceae) | None | 0/100 |
| Grass (Poaceae) | None | 0/100 |
Tomorrow - 17 September
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Acacia (Acacia) | Low | 19/100 | |
| Cypress (Cupressaceae) | Low | 24/100 | |
| Eucalyptus (Myrtaceae) | Low | 17/100 | |
| Grass (Poaceae) | None | 0/100 |
Local Environmental Conditions
Mosman sits within the Sydney Harbour National Park bushland belt, where sandstone-adapted eucalypt and angophora woodland survives extensively on the peninsula's ridges and foreshores. Affluent residential streets carry established exotic and native garden plantings among the bushland. Banksia and other heath shrubs occur on exposed sandstone. This proximity to substantial native bushland gives Mosman a stronger eucalypt and native-shrub pollen signature than most other harbourside suburbs closer to the city.
Mosman's leafy streets and generous bushland reserves along the harbour foreshore give it a fuller tree pollen exposure than more built-up parts of Sydney, with eucalypt and casuarina flowering August-September feeding into a solid spring tree pollen count. Grass pollen from parks and sportsgrounds peaks October-December. The suburb's bushland pockets mean tree pollen can be more prominent here relative to grass than in flatter, more built-up suburbs.
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Frequently Asked Questions About Pollen in New South Wales
Is pollen high in Sydney right now?
On 16 September 2026, overall pollen levels in Sydney are low. Acacia is the main contributor to airborne pollen, while cypress remain at lower levels
Will pollen levels change in Sydney tomorrow?
On 17 September 2026, pollen conditions in Sydney will be different from today, with acacia at low levels, cypress at low levels, myrtle at low levels
Is pollen expected to decrease in Sydney this week?
According to the five-day outlook, acacia, cypress, and myrtle pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in Sydney?
On 16 September 2026, Acacia is the dominant pollen source in Sydney. cypress are also present but at lower levels. myrtle and grass are not currently active.
When is pollen season in Sydney?
How often is the Sydney pollen forecast updated?
The Sydney pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Sydney 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 Sydney 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 Sydney, 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).
