DeKalb pollen forecast - today, tomorrow and the week ahead
Today (9 August) pollen in DeKalb is medium; ragweed is medium; grass and mugwort 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.
Get the full experience in the Airmine app.
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Follow your pollen exposure and performance with the free Airmine–Strava integration. See your pollen and air quality exposure for every Strava activity.
Set on flat prairie farmland in north-central Illinois, DeKalb's landscape is defined by cottonwood windbreaks alongside farmland crops and prairie remnants, the main contributors to seasonal pollen exposure. Local parks and open ground tend to see higher pollen counts than the denser urban core. The mix of native and introduced species here is fairly typical for this part of the country.
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
1/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
Low
1/100
-
Ragweed (Ambrosia):
Medium
27/100
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
32/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
Medium
34/100
-
Ragweed (Ambrosia):
High
60/100
Air quality in DeKalb
View air qualityPollen forecast for neighborhoods and landmarks in DeKalb
Frequently Asked Questions
Is pollen high in DeKalb right now?
On 9 August 2026, overall pollen levels in DeKalb are moderate. Ambrosia is the main contributor to airborne pollen, while grass and artemisia remain at lower levels
Will pollen levels change in DeKalb tomorrow?
On 10 August 2026, pollen conditions in DeKalb will be different from today, with grass, ambrosia, artemisia increasing
Is pollen expected to decrease in DeKalb this week?
According to the five-day outlook, grass, ambrosia, and artemisia pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in DeKalb?
On 9 August 2026, Ambrosia is the dominant pollen source in DeKalb. grass and artemisia are also present but at lower levels. cypress are not currently active.
When is pollen season in DeKalb?
How often is the DeKalb pollen forecast updated?
The DeKalb pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in DeKalb 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 DeKalb 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 DeKalb, 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 DeKalb.
Get the full experience in the Airmine app.
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.