Portland West Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (7 October) pollen in Portland West is moderate; cypress and eucalyptus are moderate; acacia, mold (alternaria), and mold (cladosporium) are low.
Pollen Tomorrow
Tomorrow (8 October 2026) mold (alternaria) remains low, acacia increasing, cypress increasing, eucalyptus increasing, mold (cladosporium) increasing, grass at low levels.
7-Day Trend
Over the next week acacia, cypress, eucalyptus, grass, mold (alternaria), and mold (cladosporium) will decrease.
Explore Forecasts
Air Quality & Mold
Pollen for Neighborhoods
Air Quality in Other Cities
Get More in Our App
Local pollen and air quality forecasts, interactive pollen maps and route profiles
Features and forecast availability vary by region.
Pollen Risk
Today - 7 October
| Pollen species | Level | Value |
|---|---|---|
| Acacia (Acacia) | Low | 21/100 |
| Cypress (Cupressaceae) | Moderate | 37/100 |
| Eucalyptus (Myrtaceae) | Moderate | 34/100 |
| Grass (Poaceae) | None | 0/100 |
| Alternaria | Low | 7/100 |
| Cladosporium | Low | 20/100 |
Tomorrow - 8 October
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Acacia (Acacia) | Moderate | 50/100 | |
| Cypress (Cupressaceae) | High | 65/100 | |
| Eucalyptus (Myrtaceae) | High | 63/100 | |
| Grass (Poaceae) | Low | 22/100 | |
| Alternaria | Low | 22/100 | |
| Cladosporium | Moderate | 37/100 |
Local Environmental Conditions
Around 54% of the area near the heart of Portland West is woodland, with a good deal of open water. With this much woodland around, trees are an important local pollen source. Beyond the trees, grasses matter a great deal, and pigweed is the main weed source. Gaps in the canopy, trails and forest edges give grasses and herbs room to grow.
Flowering trees bring the first pollen of the year in early spring. Grasses take over in midsummer, with temperatures around 15°C, and their pollen lingers into early fall. The season closes with pigweed from early summer into early fall. Warm, damp weather from midsummer into mid-fall also raises mold spore levels.
Get pollen & AQ on Strava
Follow your environmental exposure and performance with the free Airmine-Strava integration. See your pollen and air quality exposure for every Strava activity.
Resource Hub
Pollen forecast neighborhoods 2 neighborhoods
Frequently Asked Questions About Pollen in Victoria
Is pollen high in Portland West right now?
On 7 October 2026, overall pollen levels in Portland West are moderate. Cypress is the main contributor to airborne pollen, while myrtle and acacia remain at lower levels
Will pollen levels change in Portland West tomorrow?
On 8 October 2026, pollen conditions in Portland West will be different from today, with grass at low levels and acacia, cypress, myrtle increasing
Is pollen expected to decrease in Portland West this week?
According to the five-day outlook, acacia, cypress, myrtle, and grass pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in Portland West?
On 7 October 2026, Cypress is the dominant pollen source in Portland West. myrtle and acacia are also present but at lower levels. grass are not currently active.
When is pollen season in Portland West?
How often is the Portland West pollen forecast updated?
The Portland West pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Portland West 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 Portland West 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 Portland West, 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).
