Randburg pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Randburg 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 | 22/100 |
| Eucalyptus (Myrtaceae) | Low | 12/100 |
| Grass (Poaceae) | None | 0/100 |
| Oak (Quercus) | Low | 16/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | Low | 7/100 |
| Mulberry (Morus) | Low | 22/100 |
| Plane (Platanus) | Low | 20/100 |
| 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 | 23/100 | |
| Eucalyptus (Myrtaceae) | Low | 13/100 | |
| Grass (Poaceae) | None | 0/100 | |
| Oak (Quercus) | Low | 17/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | Low | 9/100 | |
| Mulberry (Morus) | Low | 23/100 | |
| Plane (Platanus) | Low | 22/100 | |
| Nettle (Urtica) | None | 0/100 |
Local Environmental Conditions
Randburg's suburban setting in northern Johannesburg features acacia, eucalyptus, and introduced oak as the main tree pollen sources in parks and along streets, with exposure varying between green areas and the more built-up areas. Surrounding Gauteng highveld grassland contributes substantial grass pollen, with the summer rainfall climate concentrating exposure from November to March.
Randburg's pollen season follows the Southern Hemisphere spring and summer pattern, opening with tree pollen from acacia, eucalyptus, and introduced oak from August through October. Grass pollen from surrounding Highveld grassland dominates from October through March, coinciding with the summer rainfall season. Thunderstorms during the peak grass season can periodically concentrate pollen, while the dry Highveld winter from May to August is largely free of significant grass pollen.
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Frequently Asked Questions About Pollen in Gauteng
Is pollen high in Randburg right now?
On 20 September 2026, overall pollen levels in Randburg 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 Randburg tomorrow?
On 21 September 2026, pollen conditions in Randburg will be similar to today, with cypress at low levels, morus at low levels, myrtle at low levels, platanus at low levels, oak at low levels, artemisia at low levels
Is pollen expected to decrease in Randburg 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 Randburg?
On 20 September 2026, Cypress is the dominant pollen source in Randburg. 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 Randburg?
How often is the Randburg pollen forecast updated?
The Randburg pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Randburg 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 Randburg 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 Randburg, 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).
