Hermanus pollen forecast — Stony Point Penguin Colony neighborhood
Pollen Today
Today (20 September) pollen in Stony Point Penguin Colony, Hermanus is moderate; cypress, eucalyptus, mugwort, mulberry, and nettle are moderate; grass and plane are low.
Pollen Tomorrow
Tomorrow (21 September 2026) cypress remains moderate, grass remains low, mugwort remains moderate, mulberry remains moderate, plane remains low, nettle remains moderate, eucalyptus declining.
7-Day Trend
Over the next week cypress, eucalyptus, grass, mugwort, mulberry, plane, and nettle will increase; oak will remain stable.
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Pollen Risk
Today - 20 September
| Pollen species | Level | Value |
|---|---|---|
| Alder (Alnus) | None | 0/100 |
| Birch (Betula) | None | 0/100 |
| Hazel (Corylus) | None | 0/100 |
| Cypress (Cupressaceae) | Moderate | 37/100 |
| Eucalyptus (Myrtaceae) | Moderate | 26/100 |
| Grass (Poaceae) | Low | 10/100 |
| Oak (Quercus) | None | 0/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | Moderate | 41/100 |
| Mulberry (Morus) | Moderate | 32/100 |
| Plane (Platanus) | Low | 20/100 |
| Nettle (Urtica) | Moderate | 47/100 |
Tomorrow - 21 September
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Alder (Alnus) | None | 0/100 | — |
| Birch (Betula) | None | 0/100 | — |
| Hazel (Corylus) | None | 0/100 | — |
| Cypress (Cupressaceae) | Moderate | 31/100 | |
| Eucalyptus (Myrtaceae) | Low | 20/100 | |
| Grass (Poaceae) | Low | 3/100 | |
| Oak (Quercus) | None | 0/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | Moderate | 33/100 | |
| Mulberry (Morus) | Moderate | 26/100 | |
| Plane (Platanus) | Low | 13/100 | |
| Nettle (Urtica) | Moderate | 41/100 |
Local Environmental Conditions
Stony Point Penguin Colony lies roughly 80 km southeast of Cape Town. Stony Point Penguin Colony's vegetation draws on indigenous forest, fynbos, and coastal scrub, with denser tree cover found away from the built-up coastal strip. Surrounding tourism and forestry operations shapes the wider landscape, while consistent year-round rainfall keeps a broad mix of species contributing pollen for months at a time, consistent with the wider Garden Route forest belt.
At Stony Point Penguin Colony, the Garden Route's mild climate spreads the pollen season out from July through October, starting with wattle and fynbos before forest and grass take over. The surrounding tourism and forestry operations adds further variety to the vegetation, keeping the season gentler than the sharper Cape peak further west, a pattern typical of the wider Garden Route climate.
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Frequently Asked Questions About Pollen in Western Cape
Is pollen high in Hermanus right now?
On 20 September 2026, overall pollen levels in Hermanus are moderate. Morus is the main contributor to airborne pollen, while myrtle, urtica, artemisia, cypress, platanus, and grass remain at lower levels
Will pollen levels change in Hermanus tomorrow?
On 21 September 2026, pollen conditions in Hermanus will be different from today, with morus at moderate levels, platanus at low levels, grass at low levels, urtica at moderate levels, artemisia at moderate levels, cypress at moderate levels and myrtle continuing to decline
Is pollen expected to decrease in Hermanus this week?
According to the five-day outlook, morus, myrtle, platanus, grass, urtica, artemisia, and cypress pollen levels will increase later in the week.
Which pollen types are currently active in Hermanus?
On 20 September 2026, Morus is the dominant pollen source in Hermanus. myrtle, urtica, artemisia, cypress, platanus, and grass are also present but at lower levels. oak are not currently active.
When is pollen season in Hermanus?
How often is the Hermanus pollen forecast updated?
The Hermanus pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Hermanus 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 Hermanus 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 Hermanus, 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. |
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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).
