Swellendam pollen forecast — Marloth Nature Reserve neighborhood
Pollen Today
Today (20 September) pollen in Marloth Nature Reserve, Swellendam is moderate; mugwort and nettle are moderate; cypress, eucalyptus, grass, mulberry, and plane are low.
Pollen Tomorrow
Tomorrow (21 September 2026) levels are similar to today.
7-Day Trend
Over the next week mugwort and nettle will increase; cypress, eucalyptus, grass, mulberry, and plane will decrease; 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) | Low | 13/100 |
| Eucalyptus (Myrtaceae) | Low | 11/100 |
| Grass (Poaceae) | Low | 11/100 |
| Oak (Quercus) | None | 0/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | Moderate | 32/100 |
| Mulberry (Morus) | Low | 12/100 |
| Plane (Platanus) | Low | 11/100 |
| Nettle (Urtica) | Moderate | 44/100 |
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) | Low | 14/100 | |
| Eucalyptus (Myrtaceae) | Low | 12/100 | |
| Grass (Poaceae) | Low | 12/100 | |
| Oak (Quercus) | None | 0/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | Moderate | 32/100 | |
| Mulberry (Morus) | Low | 14/100 | |
| Plane (Platanus) | Low | 12/100 | |
| Nettle (Urtica) | Moderate | 45/100 |
Local Environmental Conditions
Marloth Nature Reserve lies roughly 190 km east of Cape Town. Native fynbos, oak, and pine make up the bulk of the vegetation at Marloth Nature Reserve, with the balance shifting between planted green spaces and denser built-up areas nearby. The district's wheat farming and small-town activity contributes to a landscape that produces a short, sharp spring pollen peak, consistent with the broader Cape fynbos biome.
Marloth Nature Reserve's spring pollen season runs from August into November, led by fynbos and oak before grass takes over in September and October. Nearby wheat farming and small-town activity adds to the local vegetation mix, and the Cape's characteristically dry, windy summer keeps the rest of the year comparatively pollen-free, a pattern typical of the broader Cape fynbos biome.
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Frequently Asked Questions About Pollen in Western Cape
Is pollen high in Swellendam right now?
On 20 September 2026, overall pollen levels in Swellendam are moderate. Artemisia is the main contributor to airborne pollen, while urtica, cypress, morus, myrtle, platanus, and grass remain at lower levels
Will pollen levels change in Swellendam tomorrow?
On 21 September 2026, pollen conditions in Swellendam will be similar to today, with artemisia at moderate levels, cypress at low levels, morus at low levels, myrtle at low levels, platanus at low levels, grass at low levels, urtica at moderate levels
Is pollen expected to decrease in Swellendam this week?
According to the five-day outlook, cypress, morus, myrtle, platanus, and grass pollen levels are expected to gradually decrease, while artemisia and urtica pollen will increase, suggesting mixed conditions later in the week.
Which pollen types are currently active in Swellendam?
On 20 September 2026, Artemisia is the dominant pollen source in Swellendam. urtica, cypress, morus, myrtle, platanus, and grass are also present but at lower levels. oak are not currently active.
When is pollen season in Swellendam?
How often is the Swellendam pollen forecast updated?
The Swellendam pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Swellendam 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 Swellendam 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 Swellendam, 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).
