Somerset West pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Somerset West is moderate; cypress, mugwort, and nettle are moderate; eucalyptus, grass, mulberry, and plane are low.
Pollen Tomorrow
Tomorrow (21 September 2026) eucalyptus remains low, grass remains low, mugwort remains moderate, mulberry remains low, plane remains low, nettle remains moderate, cypress declining.
7-Day Trend
Over the next week cypress, eucalyptus, grass, mugwort, mulberry, plane, and nettle will increase; oak will remain stable.
Explore Forecasts
Air Quality
Pollen in Other Cities
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 - 20 September
| Pollen species | Level | Value |
|---|---|---|
| Alder (Alnus) | None | 0/100 |
| Birch (Betula) | None | 0/100 |
| Hazel (Corylus) | None | 0/100 |
| Cypress (Cupressaceae) | Moderate | 26/100 |
| Eucalyptus (Myrtaceae) | Low | 17/100 |
| Grass (Poaceae) | Low | 19/100 |
| Oak (Quercus) | None | 0/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | Moderate | 45/100 |
| Mulberry (Morus) | Low | 22/100 |
| Plane (Platanus) | Low | 15/100 |
| Nettle (Urtica) | Moderate | 50/100 |
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 | 18/100 | |
| Eucalyptus (Myrtaceae) | Low | 10/100 | |
| Grass (Poaceae) | Low | 12/100 | |
| Oak (Quercus) | None | 0/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | Moderate | 37/100 | |
| Mulberry (Morus) | Low | 15/100 | |
| Plane (Platanus) | Low | 8/100 | |
| Nettle (Urtica) | Moderate | 45/100 |
Local Environmental Conditions
A waterway supports acacia and eucalyptus along its bank, both strongly allergenic wind-pollinated species; this sits close by. Located close to this spot, this area has a wooded area built around oak and eucalyptus, both contributing heavily to the region's spring pollen totals. A nearby park's turf and ornamental trees layer grass and ragweed pollen onto the seasonal mix; this sits a short distance from here.
Acacia and eucalyptus near the water open the pollen calendar early, peaking in late winter through September. Oak and eucalyptus in the woods pick up where the earlier species leave off, generally peaking somewhere between October and November. Grass pollen becomes the dominant allergen through late spring, peaking in December, before ragweed pollen takes center stage across mid-February into April.
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
Frequently Asked Questions About Pollen in Western Cape
Is pollen high in Somerset West right now?
On 20 September 2026, overall pollen levels in Somerset West are moderate. Urtica is the main contributor to airborne pollen, while artemisia, cypress, grass, morus, myrtle, and platanus remain at lower levels
Will pollen levels change in Somerset West tomorrow?
On 21 September 2026, pollen conditions in Somerset West will be different from today, with grass at low levels, urtica at moderate levels, artemisia at moderate levels, morus at low levels, myrtle at low levels, platanus at low levels and cypress continuing to decline
Is pollen expected to decrease in Somerset West this week?
According to the five-day outlook, grass, urtica, artemisia, cypress, morus, myrtle, and platanus pollen levels will increase later in the week.
Which pollen types are currently active in Somerset West?
On 20 September 2026, Urtica is the dominant pollen source in Somerset West. artemisia, cypress, grass, morus, myrtle, and platanus are also present but at lower levels. oak are not currently active.
When is pollen season in Somerset West?
How often is the Somerset West pollen forecast updated?
The Somerset West pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Somerset 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 Somerset 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 Somerset 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 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).
