City of Knox pollen forecast — Upper Ferntree Gully neighborhood
Pollen Today
Today (20 September) pollen in Upper Ferntree Gully, City of Knox is moderate; cypress and eucalyptus are moderate; acacia is low.
Pollen Tomorrow
Tomorrow (21 September 2026) acacia no longer expected, 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) | Low | 19/100 |
| Cypress (Cupressaceae) | Moderate | 29/100 |
| Eucalyptus (Myrtaceae) | Moderate | 32/100 |
| Grass (Poaceae) | None | 0/100 |
Tomorrow - 21 September
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Acacia (Acacia) | None | 0/100 | |
| Cypress (Cupressaceae) | None | 0/100 | |
| Eucalyptus (Myrtaceae) | None | 0/100 | |
| Grass (Poaceae) | None | 0/100 |
Local Environmental Conditions
Located not far from here, this area has the riverbank shelters wattle and casuarina, two trees whose pollen travels readily on the breeze. Located just around the area, this area has the tree cover here leans heavily on plane tree and eucalypt, both key drivers of spring pollen.
In Upper Ferntree Gully, temperatures climbing to 12.3°C by September likely mark the start of the main pollen release, with humidity around 76% helping keep counts airborne. Warmer conditions by December (18.0°C, 69% humidity) sustain grass pollen through the season, before rainfall of 61mm in March and cooling toward 10.2°C in June bring the season to a close.
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Frequently Asked Questions About Pollen in Victoria
Is pollen high in City of Knox right now?
On 20 September 2026, overall pollen levels in City of Knox are moderate. Cypress is the main contributor to airborne pollen, while myrtle and acacia remain at lower levels
Will pollen levels change in City of Knox tomorrow?
On 21 September 2026, pollen conditions in City of Knox will be similar to today with no significant pollen expected.
Is pollen expected to decrease in City of Knox this week?
According to the five-day outlook, cypress, myrtle, and acacia pollen levels will increase later in the week.
Which pollen types are currently active in City of Knox?
On 20 September 2026, Cypress is the dominant pollen source in City of Knox. myrtle and acacia are also present but at lower levels. grass are not currently active.
When is pollen season in City of Knox?
How often is the City of Knox pollen forecast updated?
The City of Knox pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in City of Knox 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 City of Knox 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 City of Knox, 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).
