Harrismith pollen forecast - today, tomorrow and the week ahead

Today (25 June) pollen in Harrismith is none Tomorrow (26 June 2026) levels are similar - platanus at low levels, urtica at low levels. Over the following five days platanus and urtica will increase. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.

For long term forecasts and maps, see the Airmine app

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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team

Harrismith's Free State Drakensberg foothills setting features Drakensberg highland grassland, acacia, and eucalyptus as the main pollen sources, with exposure varying between the Platberg Mountain above and the more built-up commercial corridors in the valley town. Platberg is a particularly significant local pollen source, while the surrounding eastern Free State Highveld farmland contributes substantial grass pollen and the dramatic mountain setting creates pronounced elevation-based pollen gradients throughout.

Today - 25 June

  • 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

  • Willow (Salicaceae):

    None

    0/100

  • Artemisia:

    None

    0/100

  • Morus:

    None

    0/100

  • Platanus:

    None

    0/100

  • Urtica:

    None

    0/100

High pollen levels may trigger sneezing, itchy eyes, and congestion. Airmine's neighbourhood estimates use satellites to map local vegetation and a statistical prediction model, updated four times daily.

Tomorrow - 26 June

  • 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

  • Willow (Salicaceae):

    None

    0/100

  • Artemisia:

    None

    0/100

  • Morus:

    None

    0/100

  • Platanus:

    Low

    3/100

  • Urtica:

    Low

    2/100

Frequently Asked Questions

Is pollen high in Harrismith right now?

Currently, there is no significant pollen in Harrismith.

Will pollen levels change in Harrismith tomorrow?

On 26 June 2026, pollen conditions in Harrismith will be different from today, with platanus at low levels, urtica at low levels

Is pollen expected to decrease in Harrismith this week?

According to the five-day outlook, platanus, urtica, artemisia, cypress, and morus pollen levels will increase later in the week.

Which pollen types are currently active in Harrismith?

On 25 June 2026, there are no significant pollen types in Harrismith.

When is pollen season in Harrismith?
Harrismith's Free State Drakensberg foothills season opens in August with Drakensberg highland grasses and acacia before grass from surrounding eastern Free State Highveld farmland peaks through November and December. The Platberg Mountain above creates pronounced elevation-based pollen gradients, while the surrounding Highveld farmland contributes substantial grass and crop pollen throughout the summer rainfall season.
How often is the Harrismith pollen forecast updated?

The Harrismith pollen forecast is updated four times daily. See the timestamp below for the most recent update.

Does pollen in Harrismith 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 Harrismith 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 Harrismith, 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.

Want to see pollen forecasts for other cities in South Africa?

Cape Town Durban Johannesburg Katlehong Khayelitsha Newcastle Pretoria Rustenburg Zebediela

Check pollen in other popular cities:

Sydney Rio de Janeiro Copenhagen Paris Athens Denpasar Rome Cape Town Barcelona London Los Angeles New York

Data provided by Airmine — Last update: 25 Jun 2026, 09:00 CET (Data is updated four times daily.)

This page provides the latest public pollen forecast for Harrismith.

For long term forecasts and maps, see the Airmine app

Download on the App Store Get it on Google Play

Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team

Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.