Dewetsdorp pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Dewetsdorp is low; cypress, eucalyptus, mugwort, mulberry, plane, and nettle are low.
Pollen Tomorrow
Tomorrow (21 September 2026) eucalyptus remains low, mugwort remains low, plane remains low, nettle remains low, cypress increasing, mulberry increasing.
7-Day Trend
Over the next week cypress, eucalyptus, mugwort, mulberry, plane, and nettle will decrease; grass and oak 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 | 14/100 |
| Eucalyptus (Myrtaceae) | Low | 9/100 |
| Grass (Poaceae) | None | 0/100 |
| Oak (Quercus) | None | 0/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | Low | 5/100 |
| Mulberry (Morus) | Low | 14/100 |
| Plane (Platanus) | Low | 9/100 |
| Nettle (Urtica) | Low | 3/100 |
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 | 27/100 | |
| Eucalyptus (Myrtaceae) | Low | 22/100 | |
| Grass (Poaceae) | None | 0/100 | |
| Oak (Quercus) | None | 0/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | Low | 17/100 | |
| Mulberry (Morus) | Moderate | 27/100 | |
| Plane (Platanus) | Low | 21/100 | |
| Nettle (Urtica) | Low | 15/100 |
Local Environmental Conditions
Dewetsdorp lies roughly 60 km southeast of Bloemfontein. Grassland dominates the land around Dewetsdorp once you're past the eucalyptus- and acacia-lined streets near the centre, with maize, sunflower, and grain farming operations shaping much of what lies further out. The seasonal grass pollen surge each summer draws directly on this surrounding open plateau vegetation. This pattern holds true across most of the surrounding Highveld plateau.
The pollen calendar at Dewetsdorp starts quietly, with acacia and eucalyptus trickling in from August before Highveld grass takes over decisively through October and November, against a backdrop shaped by maize, sunflower, and grain farming operations. Rain arriving in spring is what finally ends the dry, low-pollen winter stretch. This mirrors the broader seasonal pattern seen across much of the Highveld region.
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Frequently Asked Questions About Pollen in Free State
Is pollen high in Dewetsdorp right now?
On 20 September 2026, overall pollen levels in Dewetsdorp are low. Morus is the main contributor to airborne pollen, while myrtle, platanus, urtica, artemisia, and cypress remain at lower levels
Will pollen levels change in Dewetsdorp tomorrow?
On 21 September 2026, pollen conditions in Dewetsdorp will be different from today, with myrtle at low levels, platanus at low levels, urtica at low levels, artemisia at low levels and morus, cypress increasing
Is pollen expected to decrease in Dewetsdorp this week?
According to the five-day outlook, morus, myrtle, platanus, urtica, artemisia, and cypress pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in Dewetsdorp?
On 20 September 2026, Morus is the dominant pollen source in Dewetsdorp. myrtle, platanus, urtica, artemisia, and cypress are also present but at lower levels. grass and oak are not currently active.
When is pollen season in Dewetsdorp?
How often is the Dewetsdorp pollen forecast updated?
The Dewetsdorp pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Dewetsdorp 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 Dewetsdorp 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 Dewetsdorp, 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).
