What is the pollen count in Naperville today?

Today's pollen levels in Naperville: Tree pollen is None, Grass pollen is None, Weed pollen is Low. Weed pollen is the dominant type right now, driven by Ragweed and Mugwort.

What will the pollen count be tomorrow in Naperville?

Pollen in Naperville is forecast to reach Moderate tomorrow. Weed pollen is the main driver. That's a full-day figure, so early morning usually runs higher than late afternoon. Check again in the morning, because wind and rain can shift it overnight.

What does a Low pollen count mean in Naperville?

A Low pollen count means concentrations are minimal. Most people, including those with mild allergies, can spend time outdoors comfortably.

What are the main allergy triggers in Naperville right now?

Pollen levels across all types are currently low in Naperville. Most allergy sufferers should find conditions manageable today.

What should allergy sufferers do when pollen is Low in Naperville?

Pollen levels are low in Naperville today, so most outdoor activities should be comfortable. It is still a good idea to check levels daily, since conditions can change quickly with wind and weather shifts.

Does weather affect pollen levels in Naperville?

Yes, weather directly affects pollen levels in Naperville. Wind spreads pollen farther, rain washes it from the air, and humidity can either trap or disperse particles. Today's winds (16 mph) may be spreading pollen more than usual. Higher humidity today (87%) may help keep some pollen grounded.

Naperville, IL Pollen Count Today

Name: Pollen Data for Naperville
Creator: MyPollenPal
Keywords: pollen, air quality, allergies, forecast

Live pollen forecast and air quality for Naperville, Illinois

📍 Naperville, ILToday · Oct 16

6/10

Breathability™ Score

Good day overall with a few allergy-aware adjustments.

🌳Tree Pollen

None

🌱Grass Pollen

None

🌿Weed Pollen

Low

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Today's Pollen Levels in Naperville

Weed pollen is slightly elevated at Low levels in Naperville. Overall conditions are manageable for most people. With a Breathability™ Score of 6, conditions are mixed and may vary through the day.

Breathability™ Score is 6/10
Tree pollen is None, led by Alder and Birch
Grass pollen is None, led by Grass
Weed pollen is Low, led by Ragweed and Mugwort
Air quality is Good today

Yesterday's Pollen in Naperville

→Tree pollen: None yesterday, None today

→Grass pollen: None yesterday, None today

↑Weed pollen: Low yesterday, Moderate todayHigher

Pollen rose from Low to Moderate for weed pollen. Wind may have spread more today.

You may notice stronger symptoms today compared to yesterday.

How Today's Pollen May Affect You

Mild allergy sufferers

You may notice mild irritation at peak times. Weed pollen is elevated; consider shorter midday exposure and keep water handy.

Moderate allergy sufferers

Plan around peak pollen windows. Try errands early or later, and consider a mask in high-traffic outdoor areas.

Severe allergy sufferers

Use high-protection habits today: shorter trips, cleaner indoor air, and reduced exposure during peak pollen hours.

5-Day Pollen Forecast

Pollen in Naperville eases to Low by Sunday.

Today

Oct 16

Overall: Moderate

Tree: None

Grass: None

Weed: Moderate

Wind: 21 mph (may spread pollen)

Rain: 41%

Humidity: 77%

Sat

Oct 17

Overall: Moderate

Tree: None

Grass: None

Weed: Moderate

Wind: 15 mph (may spread pollen)

Rain: 5%

Humidity: 68%

Sun

Oct 18

Overall: Low

Tree: None

Grass: None

Weed: Low

Wind: 13 mph

Rain: 3%

Humidity: 55%

Mon

Oct 19

Overall: Low

Tree: None

Grass: None

Weed: Low

Wind: 8 mph

Rain: 5%

Humidity: 55%

Tue

Oct 20

Overall: Low

Tree: None

Grass: None

Weed: Low

Wind: 5 mph

Rain: 7%

Humidity: 51%

Tree Pollen in Naperville Today

Tree pollen in Naperville is None today. Tree pollen season typically runs from early spring through late May, peaking when deciduous trees release their pollen. On low days like today, outdoor activities are generally comfortable for most allergy sufferers.

Species Breakdown

Alder0 grains/m³

Birch0 grains/m³

Hazel0 grains/m³

Oak0 grains/m³

Grass Pollen in Naperville Today

Grass pollen in Naperville is None today. Grass pollen season typically peaks from late spring through summer (May through August in most regions). On low-count days, grass allergy sufferers can generally spend time outdoors without significant symptoms.

Species Breakdown

Grass0 grains/m³

Weed Pollen in Naperville Today

Weed pollen in Naperville is Low today, reaching 12.72 grains/m³. Ragweed and Mugwort are the primary driver. Ragweed is the most common allergen in this category, and elevated levels can trigger persistent symptoms even in people who are only mildly sensitive.

Common Symptoms

Persistent sneezing
Runny nose
Itchy eyes and throat
Nasal congestion
Fatigue from prolonged exposure

Species Breakdown

Ragweed12.72 grains/m³

Mugwort0 grains/m³

Air Quality in Naperville Today

🌬️

Air Quality

Good

Air Pollutant Breakdown

PM2.5Good

1 µg/m³

Tiny particles smaller than 2.5 micrometers that can reach deep into your lungs and bloodstream. High levels can affect breathing and heart health.

PM10Good

1 µg/m³

Larger particles up to 10 micrometers, like dust or pollen. They can irritate your airways and worsen allergies or asthma.

Ozone (O3)Good

31 µg/m³

Elevated levels irritate airways and can worsen asthma symptoms.

Nitrogen Dioxide (NO2)Good

8.3 µg/m³

A respiratory irritant from vehicle exhaust that can trigger inflammation in sensitive airways.

Sulfur Dioxide (SO2)Good

1 µg/m³

Even brief exposure can tighten airways, especially for people with asthma.

Carbon Monoxide (CO)Good

149 µg/m³

High levels reduce oxygen delivery in the body, compounding breathing difficulty on high-pollen days.

See the full Naperville air quality report →

Weather in Naperville Today

☁️

Weather

53°F

Cloudy

Humidity

87%

Wind

16 mph WNW

Feels Like

46°F

Pressure

1011 mb

Frequently Asked Questions

When pollen keeps winning, see an allergist

Pollen shifts week to week in Naperville. If cetirizine (Zyrtec) or a steroid nasal spray stopped holding your symptoms down, or they drag on for months at a time, a board-certified allergist can test exactly what you react to and treat the cause instead of the symptom.

See 5 board-certified allergists in Illinois →

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Allergy Guides and Resources

Seasonal pollen guides, daily city rankings, and practical tips for managing your allergies.

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