Hillsborough pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (16 September) pollen in Hillsborough is low; acacia, cypress, and eucalyptus are low.
Pollen Tomorrow
Tomorrow (17 September 2026) acacia increasing, cypress increasing, eucalyptus increasing.
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 | 8/100 |
| Cypress (Cupressaceae) | Low | 21/100 |
| Eucalyptus (Myrtaceae) | Low | 6/100 |
| Grass (Poaceae) | None | 0/100 |
Tomorrow - 17 September
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Acacia (Acacia) | Moderate | 30/100 | |
| Cypress (Cupressaceae) | Moderate | 43/100 | |
| Eucalyptus (Myrtaceae) | Moderate | 29/100 | |
| Grass (Poaceae) | None | 0/100 |
Local Environmental Conditions
Located in the wider area, this area has the waterway's edge supports river oak, a species whose fine pollen travels well beyond the immediate bank. This area, within easy reach, has woodland dominated by eucalypt and wattle, with wattle the more potent allergen of the two. A park whose lawns and ornamental plane trees quietly add to local pollen levels; this sits not far from here.
Along the waterway, river oak releases pollen first, usually peaking sometime between July and September. By late winter, eucalypt and wattle in the woods take over, topping out in the August-to-September stretch. Spring brings rising grass pollen that crests in November, holding through the summer months before tapering off by late February.
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Resource Hub
Sports venues in Hillsborough 1 sports venue
Frequently Asked Questions About Pollen in New South Wales
Is pollen high in Hillsborough right now?
On 16 September 2026, overall pollen levels in Hillsborough are low. Acacia is the main contributor to airborne pollen, while cypress and myrtle remain at lower levels
Will pollen levels change in Hillsborough tomorrow?
On 17 September 2026, pollen conditions in Hillsborough will be different from today, with acacia, cypress, myrtle increasing
Is pollen expected to decrease in Hillsborough 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 Hillsborough?
On 16 September 2026, Acacia is the dominant pollen source in Hillsborough. cypress and myrtle are also present but at lower levels. grass are not currently active.
When is pollen season in Hillsborough?
How often is the Hillsborough pollen forecast updated?
The Hillsborough pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Hillsborough 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 Hillsborough 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 Hillsborough, 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).
