Roodepoort pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Roodepoort is moderate; mugwort is moderate; cypress, eucalyptus, oak, 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 | 16/100 |
| Eucalyptus (Myrtaceae) | Low | 8/100 |
| Grass (Poaceae) | None | 0/100 |
| Oak (Quercus) | Low | 8/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | Moderate | 29/100 |
| Mulberry (Morus) | Low | 15/100 |
| Plane (Platanus) | Low | 13/100 |
| 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 | 18/100 | |
| Eucalyptus (Myrtaceae) | Low | 10/100 | |
| Grass (Poaceae) | None | 0/100 | |
| Oak (Quercus) | Low | 10/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | Moderate | 32/100 | |
| Mulberry (Morus) | Low | 17/100 | |
| Plane (Platanus) | Low | 15/100 | |
| Nettle (Urtica) | None | 0/100 |
Local Environmental Conditions
Roodepoort's suburban setting west of 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 and the Witwatersrand ridge contribute substantial grass pollen, with the summer rainfall climate concentrating exposure from November to March.
Roodepoort'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. The dry Highveld winter from May to August is largely free of significant grass pollen, while thunderstorms during summer can concentrate pollen.
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Frequently Asked Questions About Pollen in Gauteng
Is pollen high in Roodepoort right now?
On 20 September 2026, overall pollen levels in Roodepoort are moderate. Artemisia is the main contributor to airborne pollen, while cypress, morus, myrtle, platanus, and oak remain at lower levels
Will pollen levels change in Roodepoort tomorrow?
On 21 September 2026, pollen conditions in Roodepoort 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 moderate levels
Is pollen expected to decrease in Roodepoort 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 Roodepoort?
On 20 September 2026, Artemisia is the dominant pollen source in Roodepoort. 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 Roodepoort?
How often is the Roodepoort pollen forecast updated?
The Roodepoort pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Roodepoort 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 Roodepoort 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 Roodepoort, 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).
