Washington, United States

Bellevue, WA Pollen Count Today

View the current allergy index, primary allergen, tree, grass, and weed pollen levels, plus the 5-day pollen forecast for Bellevue.

Today's pollen count in Bellevue

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

Current level
High
Allergy index
4
Main allergen
Birch

Pollen Level

High Risk
4

Pollen Index

Primary Allergen

Birch

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

71°

Temp

65%

Humidity

8

Wind mph

Source: Includes pollen data from Google

Updated May 13, 2026 at 10:11 PM ET.

Check pollen in another city or ZIP code

5-Day Pollen Forecast

Best day this week

Sun - None

Worst day this week

Mon - Very High

Today
77°/59°
1
Very Low
Tree2
Grass1
Weed0
Tomorrow
86°/49°
5
Very High
Tree1
Grass0
Weed0
Sat
78°/48°
1
Very Low
Tree2
Grass0
Weed0
Sun
84°/54°
0
None
Tree0
Grass0
Weed0
Mon
91°/53°
5
Very High
Tree2
Grass0
Weed0
None
Very Low
Low
Moderate
High
Very High

Allergen Breakdown

Birch
High
Oak
Very Low
Cedar
Very Low
Maple
None
Grass
None

Pollen & Allergy Guide for Bellevue, WA

Bellevue, Washington residents can experience significant pollen exposure throughout the year. Tree pollen typically peaks during spring months, while grass pollen dominates in summer. Fall brings elevated ragweed levels, which is one of the most common allergens in the region.

When Is Allergy Season in Bellevue?

Allergy season in Bellevue generally begins in early spring as trees start releasing pollen. The most intense period varies by allergen type. Monitoring daily pollen counts with Allergy Ava helps you plan ahead and manage symptoms proactively.

Tips for Managing Allergies in Bellevue

Track your daily pollen exposure, consult with a local allergist for personalized treatment, and consider starting preventive medications 2-4 weeks before your peak allergy season. Indoor air quality management with HEPA filters can also make a significant difference.

Bellevue allergy season 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 Bellevue

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 Bellevue

What is the pollen count in Bellevue today?

Today in Bellevue, Washington, the pollen level is high with an allergy index of 4. The main allergen to watch is Birch.

When is allergy season in Bellevue, Washington?

Allergy season in Bellevue, Washington 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 Bellevue?

If you have seasonal allergies in Bellevue, 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 Bellevue, Washington?

Bellevue 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.