Grabouw pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Grabouw is high; nettle is high; cypress, eucalyptus, mugwort, and mulberry are moderate; grass and plane are low.
Pollen Tomorrow
Tomorrow (21 September 2026) cypress remains moderate, eucalyptus remains moderate, grass remains low, mugwort remains moderate, mulberry remains moderate, plane remains low, nettle 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 | 43/100 |
| Eucalyptus (Myrtaceae) | Moderate | 30/100 |
| Grass (Poaceae) | Low | 24/100 |
| Oak (Quercus) | None | 0/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | Moderate | 48/100 |
| Mulberry (Morus) | Moderate | 36/100 |
| Plane (Platanus) | Low | 23/100 |
| Nettle (Urtica) | High | 51/100 |
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 | 40/100 | |
| Eucalyptus (Myrtaceae) | Moderate | 27/100 | |
| Grass (Poaceae) | Low | 22/100 | |
| Oak (Quercus) | None | 0/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | Moderate | 45/100 | |
| Mulberry (Morus) | Moderate | 34/100 | |
| Plane (Platanus) | Low | 21/100 | |
| Nettle (Urtica) | Moderate | 50/100 |
Local Environmental Conditions
Grabouw lies roughly 60 km east-southeast of Cape Town. Native fynbos, oak, and pine make up the bulk of the vegetation at Grabouw, with the balance shifting between planted green spaces and denser built-up areas nearby. The district's vineyard and wine estate operations contributes to a landscape that produces a short, sharp spring pollen peak, consistent with the broader Cape fynbos biome.
Grabouw's spring pollen season runs from August into November, led by fynbos and oak before grass takes over in September and October. Nearby vineyard and wine estate operations 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 Grabouw right now?
On 20 September 2026, overall pollen levels in Grabouw are high. Urtica is the main contributor to airborne pollen, while cypress, morus, myrtle, artemisia, platanus, and grass remain at lower levels
Will pollen levels change in Grabouw tomorrow?
On 21 September 2026, pollen conditions in Grabouw will be different from today, with cypress at moderate levels, morus at moderate levels, myrtle at moderate levels, platanus at low levels, grass at low levels, artemisia at moderate levels and urtica continuing to decline
Is pollen expected to decrease in Grabouw this week?
According to the five-day outlook, cypress, morus, myrtle, platanus, grass, urtica, and artemisia pollen levels will increase later in the week.
Which pollen types are currently active in Grabouw?
On 20 September 2026, Urtica is the dominant pollen source in Grabouw. cypress, morus, myrtle, artemisia, platanus, and grass are also present but at lower levels. oak are not currently active.
When is pollen season in Grabouw?
How often is the Grabouw pollen forecast updated?
The Grabouw pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Grabouw 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 Grabouw 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 Grabouw, 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).
