Johannesburg pollen forecast — Bryanston Extension neighborhood
Pollen Today
Today (20 September) pollen in Bryanston Extension, Johannesburg is low; cypress, eucalyptus, oak, mugwort, mulberry, and plane are low.
Pollen Tomorrow
Tomorrow (21 September 2026) levels are similar to today.
7-Day Trend
Over the next week cypress, eucalyptus, oak, mugwort, mulberry, and plane will increase; grass and nettle 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 | 6/100 |
| Eucalyptus (Myrtaceae) | Low | 4/100 |
| Grass (Poaceae) | None | 0/100 |
| Oak (Quercus) | Low | 5/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | Low | 4/100 |
| Mulberry (Morus) | Low | 6/100 |
| Plane (Platanus) | Low | 6/100 |
| Nettle (Urtica) | None | 0/100 |
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) | None | 0/100 | |
| Oak (Quercus) | Low | 3/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | Low | 2/100 | |
| Mulberry (Morus) | Low | 4/100 | |
| Plane (Platanus) | Low | 4/100 | |
| Nettle (Urtica) | None | 0/100 |
Local Environmental Conditions
At Bryanston Extension, acacia, eucalyptus, and Highveld grassland dominate the local pollen picture, with exposure varying between wooded residential streets and more open, built-up parts of town. Surrounding government, finance, and commercial operations adds further texture to the landscape, while farmland nearby contributes grass pollen through the summer rainfall months, consistent with the wider Highveld plateau environment.
Bryanston Extension's Highveld season opens in August with acacia and eucalyptus before grass from the surrounding grassland peaks through October and November. The dry winter months keep pollen low, while government, finance, and commercial operations nearby shapes the local landscape, and the summer rainfall pattern concentrates the main season into spring and early summer.
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Frequently Asked Questions About Pollen in Gauteng
Is pollen high in Johannesburg right now?
On 20 September 2026, overall pollen levels in Johannesburg are low. Artemisia is the main contributor to airborne pollen, while cypress, morus, myrtle, platanus, and oak remain at lower levels
Will pollen levels change in Johannesburg tomorrow?
On 21 September 2026, pollen conditions in Johannesburg will be similar to today, with artemisia at low levels, cypress at low levels, morus at low levels, myrtle at low levels, platanus at low levels, oak at low levels
Is pollen expected to decrease in Johannesburg this week?
According to the five-day outlook, artemisia, cypress, morus, myrtle, platanus, and oak pollen levels will increase later in the week.
Which pollen types are currently active in Johannesburg?
On 20 September 2026, Artemisia is the dominant pollen source in Johannesburg. cypress, morus, myrtle, platanus, and oak are also present but at lower levels. grass and urtica are not currently active.
When is pollen season in Johannesburg?
How often is the Johannesburg pollen forecast updated?
The Johannesburg pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Johannesburg 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 Johannesburg 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 Johannesburg, 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).
