Belle Fourche pollen forecast - today, tomorrow and the week ahead
Today (9 August) pollen in Belle Fourche is medium; mugwort is medium; grass and ragweed are low. Tomorrow (10 August 2026) levels are similar - grass increasing, mugwort increasing, ragweed increasing. Over the following five days grass, mugwort, and ragweed will decrease. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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The vegetation around Belle Fourche, on open ranchland along the Belle Fourche River in western South Dakota, is dominated by mixed-grass prairie and riverside cottonwood, with shortgrass rangeland adding further seasonal pollen exposure. Wind patterns across the area help determine how far pollen travels from these source plants. Allergy sufferers in Belle Fourche generally plan around this same recurring seasonal rhythm.
Today - 9 August
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
None
0/100
-
Grass (Poaceae):
Low
8/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
Medium
32/100
-
Ragweed (Ambrosia):
Low
25/100
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 - 10 August
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
None
0/100
-
Grass (Poaceae):
Medium
30/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
High
57/100
-
Ragweed (Ambrosia):
Medium
50/100
Air quality in Belle Fourche
View air qualityFrequently Asked Questions
Is pollen high in Belle Fourche right now?
On 9 August 2026, overall pollen levels in Belle Fourche are moderate. Artemisia is the main contributor to airborne pollen, while ambrosia and grass remain at lower levels
Will pollen levels change in Belle Fourche tomorrow?
On 10 August 2026, pollen conditions in Belle Fourche will be different from today, with ambrosia, artemisia, grass increasing
Is pollen expected to decrease in Belle Fourche this week?
According to the five-day outlook, ambrosia, artemisia, and grass pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in Belle Fourche?
On 9 August 2026, Artemisia is the dominant pollen source in Belle Fourche. ambrosia and grass are also present but at lower levels. cypress are not currently active.
When is pollen season in Belle Fourche?
How often is the Belle Fourche pollen forecast updated?
The Belle Fourche pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Belle Fourche 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 Belle Fourche 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 Belle Fourche, 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 United States?
Check pollen in other popular cities:
Data provided by Airmine — Last update: 9 August 2026 at 20:27 CEST (Data is updated four times daily.)
This page provides the latest public pollen forecast for Belle Fourche.
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Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.