Green Bay, WI · Wisconsin

Green Bay, WI 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 Green Bay.

Primary trigger: OakRising16 mph wind

Today's pollen count in Green Bay

Today in Green Bay, Wisconsin, the forecasted pollen level is high with an allergy index of 4. The primary allergen is Oak. 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 Green Bay. Actual exposure can vary by neighborhood, weather, and time outdoors.

Current level
High
Allergy index
4
Main allergen
Oak
Tomorrow
Very High

Tomorrow rises to very high with an index of 5.

Pollen Level

High Risk
4

Pollen Index

Primary Allergen

Oak

Limit outdoor exposure. Take allergy medication and monitor symptoms closely.

78°

Temp

76%

Humidity

16

Wind mph

Weather-allergy synergy

Why conditions feel this way today

Today in Green Bay, 16 mph wind can actively disperse oak pollen. Keeping windows closed is a practical move during peak outdoor hours.

Temp
78°F
Humidity
76%
Wind
16 mph
Rain chance
15%

24-hour allergy risk curve

Best outdoor window today in Green Bay

Planning estimate
12 AM: High3 AM: High6 AM: Very High8 AM: Very High10 AM: Very High12 PM: Very High3 PM: Very High6 PM: High9 PM: High11 PM: High

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

Pollen source: fallback pollen estimate

Weather source: estimated weather

Pollen updated: June 28, 2026 at 3:40 PM ET

Weather updated: June 28, 2026 at 3:40 PM ET

Pollen can vary by neighborhood, vegetation, wind, recent rainfall, and time outdoors.

Check pollen in another city or ZIP code

5-Day Pollen Forecast

Best day this week

Thu - Very Low

Worst day this week

Tue - Very High

Today
77°/48°
3
Moderate
Tree4
Grass2
Weed0
Tomorrow
95°/62°
5
Very High
Tree4
Grass2
Weed0
Tue
73°/53°
5
Very High
Tree4
Grass3
Weed0
Wed
86°/59°
3
Moderate
Tree4
Grass1
Weed0
Thu
71°/64°
1
Very Low
Tree4
Grass1
Weed0
None
Very Low
Low
Moderate
High
Very High

Allergen Breakdown

Oak
High
Maple
Moderate
Cedar
Moderate
Grass
Low
Birch
Very Low

City allergy guide

Green Bay allergy profile

Today's risk+

Green Bay 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 Green Bay. Conditions can still vary by neighborhood, nearby plants, and time spent outdoors.

Today in Green Bay, 16 mph wind can actively disperse oak pollen. Keeping windows closed is a practical move during peak outdoor hours.

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 Green Bay 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.

Green Bay seasonal pollen calendar

Tree pollen

In season now

Spring

Often drives early-season symptoms

Grass pollen

In season now

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

Common pollen triggers around Green Bay

TriggerTypical seasonWhat to know
Tree pollenSpringOften drives early-season symptoms
Grass pollenLate spring to summerCan rise around lawns, parks, and open areas
Ragweed/weed pollenLate summer to fallMajor fall allergy trigger
Mold sporesVariesOften affected by moisture and decaying leaves

Frequently asked questions about pollen in Green Bay

What is the pollen count in Green Bay today?

Today in Green Bay, Wisconsin, the pollen level is high with an allergy index of 4. The main allergen to watch is Oak.

When is allergy season in Green Bay, Wisconsin?

Allergy season in Green Bay, Wisconsin 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 Green Bay?

If you have seasonal allergies in Green Bay, 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 Green Bay, Wisconsin?

Green Bay 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.