Spearfish pollen forecast - today, tomorrow and the week ahead
Today (9 August) pollen in Spearfish is medium; ragweed is medium; grass and mugwort are low. Tomorrow (10 August 2026) levels are similar - grass remains low, mugwort increasing, ragweed increasing. Over the following five days grass and ragweed will increase; mugwort 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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Spearfish's setting on a canyon-mouth town at the edge of the Black Hills supports ponderosa pine forest, canyon-bottom cottonwood, and mixed-grass prairie as the leading local vegetation, all factoring into the pollen count through the year. This mix of plant life is fairly typical for the wider area around Spearfish. None of this differs sharply from one year to the next barring unusual weather.
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
6/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
Low
17/100
-
Ragweed (Ambrosia):
Medium
29/100
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):
Low
25/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
Medium
38/100
-
Ragweed (Ambrosia):
High
51/100
Air quality in Spearfish
View air qualityFrequently Asked Questions
Is pollen high in Spearfish right now?
On 9 August 2026, overall pollen levels in Spearfish are moderate. Ambrosia is the main contributor to airborne pollen, while grass and artemisia remain at lower levels
Will pollen levels change in Spearfish tomorrow?
On 10 August 2026, pollen conditions in Spearfish will be different from today, with grass at low levels and ambrosia, artemisia increasing
Is pollen expected to decrease in Spearfish this week?
According to the five-day outlook, artemisia pollen levels are expected to gradually decrease, while grass and ambrosia pollen will increase, suggesting mixed conditions later in the week.
Which pollen types are currently active in Spearfish?
On 9 August 2026, Ambrosia is the dominant pollen source in Spearfish. grass and artemisia are also present but at lower levels. cypress are not currently active.
When is pollen season in Spearfish?
How often is the Spearfish pollen forecast updated?
The Spearfish pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Spearfish 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 Spearfish 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 Spearfish, 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?
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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 Spearfish.
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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.