Dr. Brian A. Smart
Duly Health and Care
Glen Ellyn, IL · Illinois
Glen Ellyn, IL Pollen Count Today
View today's allergy index, primary allergen, weather context, tree, grass, and weed pollen levels, plus the 5-day pollen forecast for Glen Ellyn.
Today's pollen count in Glen Ellyn
Today in Glen Ellyn, Illinois, the forecasted pollen level is high with an allergy index of 4. The primary allergen is Mugwort. Use the forecast below to see whether conditions are likely to rise, ease, or stay steady over the next few days.
AllergyAva shows forecasted pollen levels and allergy risk estimates for Glen Ellyn. Actual exposure can vary by neighborhood, weather, and time outdoors.
Pollen Level
High Risk4
Planning estimate (0–5)
Primary Allergen
Mugwort
Limit outdoor exposure. Take allergy medication and monitor symptoms closely.
64°
Temp
93%
Humidity
6
Wind mph
Pollen: AllergyAva seasonal estimate · Weather: Includes data from Google Maps
5-Day Pollen Forecast
Best day this week
Today - High
Worst day this week
Sat - Very High
Today
93°/47°
4
High
Tree2
Grass4
Weed4
Tomorrow
79°/62°
5
Very High
Tree1
Grass5
Weed4
Thu
83°/53°
5
Very High
Tree2
Grass3
Weed5
Fri
83°/51°
4
High
Tree1
Grass4
Weed3
Sat
89°/48°
5
Very High
Tree1
Grass4
Weed5
None
Very Low
Low
Moderate
High
Very High
Allergen Breakdown
Mugwort
High
Grass
High
Ragweed
Moderate
Oak
Low
Ava Personal Risk
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Weather-allergy synergy
Why conditions feel this way today
Today in Glen Ellyn, 93% humidity may keep irritation noticeable, especially if mugwort pollen overlaps with damp-weather mold sensitivity.
- Temp
- 64°F
- Humidity
- 93%
- Wind
- 6 mph
- Rain chance
- 4%
24-hour allergy risk curve
Best outdoor window today in Glen Ellyn
Better
Later evening or the calmest part of the day.
Avoid
Dry, breezy morning and midday periods.
Extra caution
Parks, fields, tree-lined streets, yard work, and long outdoor commutes.
Data Confidence & Sources
Pollen Forecast
- Source
- AllergyAva seasonal planning estimate
- Last Daily Update
Pollen models recalculate once daily
Weather Conditions
- Source
- Includes data from Google Maps · Weather API
- Last Refresh
Weather data updates every 15–30 minutes
Local pollen exposure can vary by micro-vegetation, wind gusts, structural barriers, and time spent outdoors.
Check pollen in another city or ZIP code
Local allergy care
Allergists near Glen Ellyn, IL
Use today's pollen forecast alongside nearby allergy and immunology profiles when symptoms need clinical follow-up, testing, or long-term treatment planning.
City allergy guide
Glen Ellyn allergy profile
Today's risk+
Glen Ellyn allergy conditions are shaped by local weather, seasonal vegetation, and short-term changes in wind, rain, humidity, and temperature. Tree pollen is usually more important in spring, grass pollen often builds from late spring into summer, and weed pollen can become more noticeable later in the year.
Use today's pollen index alongside the 5-day forecast to plan commutes, outdoor exercise, yard work, and window-open time in Glen Ellyn. Conditions can still vary by neighborhood, nearby plants, and time spent outdoors.
Glen Ellyn's guide sections below focus on recurring local exposure patterns. For today, treat the high Mugwort reading as the live risk signal and use the weather card above for short-term wind, humidity, and rain context.
Seasonal guide+
Spring
Tree pollen
Often drives early-season symptoms
Late spring to summer
Grass pollen
Can rise around lawns, parks, and open areas
Late summer to fall
Ragweed/weed pollen
Major fall allergy trigger
Varies
Mold spores
Often affected by moisture and decaying leaves
Treatment and planning tips+
Track the forecast
Check Glen Ellyn pollen levels daily during active allergy periods.
Reduce indoor exposure
Keep windows closed on high-pollen days and use HVAC or HEPA filtration when appropriate.
Plan medication timing
Follow your clinician's or product-label instructions, especially before your usual peak season.
Glen Ellyn seasonal pollen calendar
Tree pollen
In season nowSpring
Often drives early-season symptoms
Grass pollen
In season nowLate spring to summer
Can rise around lawns, parks, and open areas
Ragweed/weed pollen
In season nowLate summer to fall
Major fall allergy trigger
Mold spores
Varies
Often affected by moisture and decaying leaves
Common pollen triggers around Glen Ellyn
| Trigger | Typical season | What to know |
|---|---|---|
| Tree pollen | Spring | Often drives early-season symptoms |
| Grass pollen | Late spring to summer | Can rise around lawns, parks, and open areas |
| Ragweed/weed pollen | Late summer to fall | Major fall allergy trigger |
| Mold spores | Varies | Often affected by moisture and decaying leaves |
Frequently asked questions about pollen in Glen Ellyn
What is the pollen count in Glen Ellyn today?
Today in Glen Ellyn, Illinois, the pollen level is high with an allergy index of 4. The main allergen to watch is Mugwort.
When is allergy season in Glen Ellyn, Illinois?
Allergy season in Glen Ellyn, Illinois can vary by allergen and weather conditions. Tree pollen often rises in spring, grass pollen becomes more active in late spring and summer, and weed pollen can remain elevated later in the year depending on local climate and vegetation.
How often should I check the pollen forecast in Glen Ellyn?
If you have seasonal allergies in Glen Ellyn, it is helpful to check the pollen forecast daily during peak allergy periods. Shifts in wind, rainfall, temperature, and humidity can all change local pollen exposure from one day to the next.
What pollen types affect people in Glen Ellyn, Illinois?
Glen Ellyn residents may be affected by tree pollen, grass pollen, and weed pollen during different parts of the year. The strongest trigger depends on the season, nearby vegetation, and current weather conditions.