Worcester pollen forecast — Karoo Desert National Botanical Garden neighborhood
Pollen Today
Today (20 September) pollen in Karoo Desert National Botanical Garden, Worcester is low; cypress, eucalyptus, grass, mugwort, mulberry, plane, and nettle are low.
Pollen Tomorrow
Tomorrow (21 September 2026) levels are similar to today.
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) | Low | 17/100 |
| Eucalyptus (Myrtaceae) | Low | 14/100 |
| Grass (Poaceae) | Low | 14/100 |
| Oak (Quercus) | None | 0/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | Low | 16/100 |
| Mulberry (Morus) | Low | 16/100 |
| Plane (Platanus) | Low | 15/100 |
| Nettle (Urtica) | Low | 20/100 |
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 | 4/100 | |
| Eucalyptus (Myrtaceae) | Low | 2/100 | |
| Grass (Poaceae) | Low | 2/100 | |
| Oak (Quercus) | None | 0/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | Low | 4/100 | |
| Mulberry (Morus) | Low | 4/100 | |
| Plane (Platanus) | Low | 2/100 | |
| Nettle (Urtica) | Low | 7/100 |
Local Environmental Conditions
Karoo Desert National Botanical Garden lies roughly 100 km east-northeast of Cape Town. Karoo Desert National Botanical Garden's vegetation features native fynbos, oak, and pine as the main pollen sources, with exposure varying between these green, planted areas and more built-up parts of town. Surrounding Cape fynbos and vineyard and wine estate operations contribute a distinctive spring pollen signature each year, consistent with the broader Cape fynbos biome that shapes daily exposure across the wider Cape region.
Karoo Desert National Botanical Garden's spring unfolds in a fairly predictable order: fynbos and oak from August, grass overtaking by September and October, near vineyard and wine estate operations. A dry, windy Cape summer then keeps the rest of the year comparatively quiet for pollen. This mirrors the broader seasonal pattern seen across much of the Cape fynbos belt.
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Frequently Asked Questions About Pollen in Western Cape
Is pollen high in Worcester right now?
On 20 September 2026, overall pollen levels in Worcester are low. Grass is the main contributor to airborne pollen, while urtica, artemisia, cypress, morus, myrtle, and platanus remain at lower levels
Will pollen levels change in Worcester tomorrow?
On 21 September 2026, pollen conditions in Worcester will be similar to today, with grass at low levels, urtica at low levels, artemisia at low levels, cypress at low levels, morus at low levels, myrtle at low levels, platanus at low levels
Is pollen expected to decrease in Worcester 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 Worcester?
On 20 September 2026, Grass is the dominant pollen source in Worcester. urtica, artemisia, cypress, morus, myrtle, and platanus are also present but at lower levels. oak are not currently active.
When is pollen season in Worcester?
How often is the Worcester pollen forecast updated?
The Worcester pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Worcester 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 Worcester 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 Worcester, 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).
