Aspen pollen forecast - today, tomorrow and the week ahead
Today (9 August) pollen in Aspen is high; ragweed is high; mugwort is low. Tomorrow (10 August 2026) levels are similar. Over the following five days mugwort and ragweed will increase. 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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Set on a high mountain valley at roughly 7,900 feet in the Roaring Fork valley, Aspen's landscape is defined by quaking aspen groves alongside subalpine fir and mountain sagebrush, the main contributors to seasonal pollen exposure. Seasonal timing here follows the broader regional pattern typical of this part of the country. Residents who spend time outdoors around Aspen typically notice the shift as each season turns over.
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):
None
0/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
Low
9/100
-
Ragweed (Ambrosia):
High
54/100
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):
None
0/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
Low
6/100
-
Ragweed (Ambrosia):
High
52/100
Air quality in Aspen
View air qualityFrequently Asked Questions
Is pollen high in Aspen right now?
On 9 August 2026, overall pollen levels in Aspen are high. Ambrosia is the main contributor to airborne pollen, while artemisia remain at lower levels
Will pollen levels change in Aspen tomorrow?
On 10 August 2026, pollen conditions in Aspen will be similar to today, with ambrosia at high levels, artemisia at low levels
Is pollen expected to decrease in Aspen this week?
According to the five-day outlook, grass, ambrosia, and artemisia pollen levels will increase later in the week.
Which pollen types are currently active in Aspen?
On 9 August 2026, Ambrosia is the dominant pollen source in Aspen. artemisia are also present but at lower levels. grass and cypress are not currently active.
When is pollen season in Aspen?
How often is the Aspen pollen forecast updated?
The Aspen pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Aspen 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 Aspen 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 Aspen, 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 Aspen.
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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.