Pretoria pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Pretoria is moderate; cypress and mulberry are moderate; eucalyptus, oak, mugwort, and plane are low.
Pollen Tomorrow
Tomorrow (21 September 2026) cypress remains moderate, eucalyptus remains low, oak remains low, mugwort remains low, mulberry remains moderate, plane increasing.
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) | Moderate | 35/100 |
| Eucalyptus (Myrtaceae) | Low | 14/100 |
| Grass (Poaceae) | None | 0/100 |
| Oak (Quercus) | Low | 10/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | Low | 9/100 |
| Mulberry (Morus) | Moderate | 34/100 |
| Plane (Platanus) | Low | 25/100 |
| 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) | Moderate | 36/100 | |
| Eucalyptus (Myrtaceae) | Low | 16/100 | |
| Grass (Poaceae) | None | 0/100 | |
| Oak (Quercus) | Low | 12/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | Low | 10/100 | |
| Mulberry (Morus) | Moderate | 35/100 | |
| Plane (Platanus) | Moderate | 26/100 | |
| Nettle (Urtica) | None | 0/100 |
Local Environmental Conditions
Pretoria's iconic urban landscape, anchored by Burgers Park and the Apies River corridor, features acacia, jacaranda, and eucalyptus as the main tree pollen sources, with jacaranda flowering in October being a particularly locally significant source. Exposure varies between greener residential areas and the more built-up city centre, while surrounding Highveld grassland and the Magaliesberg foothills contribute substantial grass and tree pollen throughout the summer rainfall season.
Pretoria's pollen season follows the Southern Hemisphere spring and summer pattern, opening with tree pollen from acacia and introduced species from August through October. Grass pollen from the surrounding Highveld grassland dominates from October through March, coinciding with the summer rainfall season. Thunderstorms during the peak grass season can trigger thunderstorm asthma events when grass pollen grains rupture in humid pre-storm conditions.
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Resource Hub
Pollen forecast neighborhoods 30 neighborhoods
Sports venues in Pretoria 9 sports venues
Local parkruns 1 parkrun
Frequently Asked Questions About Pollen in Gauteng
Is pollen high in Pretoria right now?
On 20 September 2026, overall pollen levels in Pretoria are moderate. Morus is the main contributor to airborne pollen, while cypress, myrtle, platanus, oak, and artemisia remain at lower levels
Will pollen levels change in Pretoria tomorrow?
On 21 September 2026, pollen conditions in Pretoria will be different from today, with morus at moderate levels, myrtle at low levels, oak at low levels, artemisia at low levels, cypress at moderate levels and platanus increasing
Is pollen expected to decrease in Pretoria this week?
According to the five-day outlook, morus, myrtle, platanus, oak, artemisia, and cypress pollen levels will increase later in the week.
Which pollen types are currently active in Pretoria?
On 20 September 2026, Morus is the dominant pollen source in Pretoria. cypress, myrtle, platanus, oak, and artemisia are also present but at lower levels. grass and urtica are not currently active.
When is pollen season in Pretoria?
How often is the Pretoria pollen forecast updated?
The Pretoria pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Pretoria 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 Pretoria 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 Pretoria, 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).
