North Plantations pollen forecast — Humpty Dumpty neighborhood
Pollen Today
Today (20 September) pollen in Humpty Dumpty, North Plantations is moderate; cypress is moderate; acacia and grass are low.
Pollen Tomorrow
Tomorrow (21 September 2026) levels are similar to today.
7-Day Trend
Over the next week acacia, cypress, and grass will decrease; eucalyptus will remain stable.
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Pollen Risk
Today - 20 September
| Pollen species | Level | Value |
|---|---|---|
| Acacia (Acacia) | Low | 16/100 |
| Cypress (Cupressaceae) | Moderate | 35/100 |
| Eucalyptus (Myrtaceae) | None | 0/100 |
| Grass (Poaceae) | Low | 17/100 |
Tomorrow - 21 September
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Acacia (Acacia) | Low | 9/100 | |
| Cypress (Cupressaceae) | Moderate | 28/100 | |
| Eucalyptus (Myrtaceae) | None | 0/100 | |
| Grass (Poaceae) | Low | 10/100 |
Local Environmental Conditions
This area, in the wider area, has the riverbank shelters river oak, whose pollen spreads readily on the wind from spring onward. Nearby, just outside the immediate area, woodland where eucalypt stands alongside wattle, the latter especially aggressive as an allergen when in full flower. Local readings for the surrounding area tend to follow this same general pattern.
Near the bank, river oak leads the seasonal calendar, starting well before the main spring rush, topping out around September. Once river oak fades, eucalypt and wattle in the woods carry the season forward, climbing steadily through late winter to a peak in August or September. Through spring, grass pollen climbs steadily toward its November peak, then holding at a high level well into January before easing off.
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Frequently Asked Questions About Pollen in Western Australia
Is pollen high in North Plantations right now?
On 20 September 2026, overall pollen levels in North Plantations are moderate. Cypress is the main contributor to airborne pollen, while grass and acacia remain at lower levels
Will pollen levels change in North Plantations tomorrow?
On 21 September 2026, pollen conditions in North Plantations will be similar to today, with cypress at moderate levels, grass at low levels, acacia at low levels
Is pollen expected to decrease in North Plantations this week?
According to the five-day outlook, cypress, grass, and acacia pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in North Plantations?
On 20 September 2026, Cypress is the dominant pollen source in North Plantations. grass and acacia are also present but at lower levels. myrtle are not currently active.
When is pollen season in North Plantations?
How often is the North Plantations pollen forecast updated?
The North Plantations pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in North Plantations 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 North Plantations 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 North Plantations, 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).
