Parramatta pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Parramatta is low; acacia, cypress, and eucalyptus are 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 | 16/100 |
| Cypress (Cupressaceae) | Low | 19/100 |
| Eucalyptus (Myrtaceae) | Low | 10/100 |
| 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
Parramatta sits on the Cumberland Plain, where remnant grey box and forest red gum woodland once dominated before urbanisation; today the city mixes planted plane trees, jacarandas and eucalypts along the river corridor with mown parkland grass, while acacia and casuarina persist in bushland reserves at its fringes. Locally, wattle is usually the first to flower in late winter, with eucalypt blossom and pasture grasses following through spring; by mid-summer the grass pollen season has typically eased, leaving a quieter run into autumn.
Parramatta sits in Sydney's western basin, where tree pollen from casuarina, plane and birch builds through August and September before grasses take over. Ryegrass and Bermuda grass pollen typically peaks between October and December, often coinciding with humid, thunderstorm-prone afternoons that can trigger sudden asthma flare-ups. Being inland of the harbour, Parramatta tends to run a few degrees warmer than the coast, which can pull tree flowering forward by a week or two. The season eases by mid-January as summer heat and drier air set in.
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Pollen forecast neighborhoods 34 neighborhoods
Sports venues in Parramatta 1 sports venue
Frequently Asked Questions About Pollen in New South Wales
Is pollen high in Parramatta right now?
On 20 September 2026, overall pollen levels in Parramatta are low. Acacia is the main contributor to airborne pollen, while cypress and myrtle remain at lower levels
Will pollen levels change in Parramatta tomorrow?
On 21 September 2026, pollen conditions in Parramatta will be similar to today with no significant pollen expected.
Is pollen expected to decrease in Parramatta this week?
According to the five-day outlook, acacia, cypress, and myrtle pollen levels will increase later in the week.
Which pollen types are currently active in Parramatta?
On 20 September 2026, Acacia is the dominant pollen source in Parramatta. cypress and myrtle are also present but at lower levels. grass are not currently active.
When is pollen season in Parramatta?
How often is the Parramatta pollen forecast updated?
The Parramatta pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Parramatta 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 Parramatta 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 Parramatta, 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).
