Greenside, Johannesburg Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (10 October) pollen in Greenside, Johannesburg is moderate; mold (cladosporium) is moderate; cypress, eucalyptus, oak, mugwort, mulberry, plane, and mold (alternaria) are low.
Pollen Tomorrow
Tomorrow (11 October 2026) mold (alternaria) remains low, mold (cladosporium) remains moderate, cypress no longer expected, eucalyptus no longer expected, oak no longer expected, mugwort no longer expected, mulberry no longer expected, plane no longer expected.
7-Day Trend
Over the next week cypress, eucalyptus, oak, mugwort, mulberry, and plane will increase; mold (alternaria) and mold (cladosporium) will decrease; grass and nettle will remain stable.
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Pollen Risk
Today - 10 October
| Pollen species | Level | Value |
|---|---|---|
| Alder (Alnus) | None | 0/100 |
| Birch (Betula) | None | 0/100 |
| Hazel (Corylus) | None | 0/100 |
| Cypress (Cupressaceae) | Low | 4/100 |
| Eucalyptus (Myrtaceae) | Low | 1/100 |
| Grass (Poaceae) | None | 0/100 |
| Oak (Quercus) | Low | 4/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | Low | 1/100 |
| Mulberry (Morus) | Low | 3/100 |
| Plane (Platanus) | Low | 4/100 |
| Nettle (Urtica) | None | 0/100 |
| Mold (Alternaria) | Low | 18/100 |
| Mold (Cladosporium) | Moderate | 26/100 |
Tomorrow - 11 October
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Alder (Alnus) | None | 0/100 | — |
| Birch (Betula) | None | 0/100 | — |
| Hazel (Corylus) | None | 0/100 | — |
| Cypress (Cupressaceae) | None | 0/100 | |
| Eucalyptus (Myrtaceae) | None | 0/100 | |
| Grass (Poaceae) | None | 0/100 | |
| Oak (Quercus) | None | 0/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | None | 0/100 | |
| Mulberry (Morus) | None | 0/100 | |
| Plane (Platanus) | None | 0/100 | |
| Nettle (Urtica) | None | 0/100 | |
| Mold (Alternaria) | Low | 19/100 | |
| Mold (Cladosporium) | Moderate | 26/100 |
Local Environmental Conditions
Woodland and built-up land share the area around this part of Johannesburg. Oak heads the list of allergenic trees nearby, ahead of olive and mulberry. Beyond the trees, grasses matter a great deal, and pigweed is the main weed source. In the immediate area, street trees, parks and lawns are the main sources in the built-up parts.
Tree pollen peaks in early spring, when the weather warms to around 20°C and oak, olive and mulberry are in full flower. Grasses take over in mid-spring and keep pollen in the air into early fall. Later, pigweed keeps weed pollen in the air from early summer into early fall. Mold spores join in from late spring into late summer, when damp, warm spells let them thrive.
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Frequently Asked Questions About Pollen in Gauteng
Is pollen high in Johannesburg right now?
On 10 October 2026, overall pollen levels in Johannesburg are low. Cypress is the main contributor to airborne pollen, while morus, myrtle, platanus, oak, and artemisia remain at lower levels
Will pollen levels change in Johannesburg tomorrow?
On 11 October 2026, pollen conditions in Johannesburg will be similar to today with no significant pollen expected.
Is pollen expected to decrease in Johannesburg this week?
According to the five-day outlook, cypress, morus, myrtle, platanus, oak, and artemisia pollen levels will increase later in the week.
Which pollen types are currently active in Johannesburg?
On 10 October 2026, Cypress is the dominant pollen source in Johannesburg. morus, myrtle, platanus, oak, and artemisia 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 pollen scores represent risk levels, not direct pollen measurements. Higher scores indicate higher risk.
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).
