Broomfield pollen forecast - today, tomorrow and the week ahead
Today (9 August) pollen in Broomfield is medium; grass, mugwort, and ragweed are medium. Tomorrow (10 August 2026) levels are similar. Over the following five days grass, 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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Broomfield's Front Range Colorado suburban setting features cottonwood, elm, and oak as the main tree pollen sources, with exposure varying between the greener residential areas around the numerous open space preserves and the more built-up commercial corridors. The Front Range Open Space corridor and the Rocky Mountain backdrop create distinct topographic effects, while the transition from foothill to plains vegetation creates varied local pollen zones.
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):
Medium
38/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
Medium
31/100
-
Ragweed (Ambrosia):
Medium
38/100
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
40/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
Medium
31/100
-
Ragweed (Ambrosia):
Medium
40/100
Air quality in Broomfield
View air qualityFrequently Asked Questions
Is pollen high in Broomfield right now?
On 9 August 2026, overall pollen levels in Broomfield are moderate. Ambrosia is the main contributor to airborne pollen, while artemisia and grass remain at lower levels
Will pollen levels change in Broomfield tomorrow?
On 10 August 2026, pollen conditions in Broomfield will be similar to today, with ambrosia at medium levels, artemisia at medium levels, grass at medium levels
Is pollen expected to decrease in Broomfield this week?
According to the five-day outlook, ambrosia, artemisia, and grass pollen levels will increase later in the week.
Which pollen types are currently active in Broomfield?
On 9 August 2026, Ambrosia is the dominant pollen source in Broomfield. artemisia and grass are also present but at lower levels. cypress are not currently active.
When is pollen season in Broomfield?
How often is the Broomfield pollen forecast updated?
The Broomfield pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Broomfield 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 Broomfield 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 Broomfield, 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: 10 August 2026 at 02:34 CEST (Data is updated four times daily.)
This page provides the latest public pollen forecast for Broomfield.
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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.