Idaho, United States

Caldwell, ID Pollen Count Today

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

Today's pollen count in Caldwell

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

Current level
High
Allergy index
4
Main allergen
Grasses

Pollen Level

High Risk
4

Pollen Index

Primary Allergen

Grasses

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

72°

Temp

55%

Humidity

8

Wind mph

Source: Includes pollen data from Google

Updated May 13, 2026 at 12:38 PM ET.

Check pollen in another city or ZIP code

5-Day Pollen Forecast

Best day this week

Fri - Moderate

Worst day this week

Sat - High

Today
87°/63°
4
High
Tree1
Grass4
Weed0
Tomorrow
87°/63°
4
High
Tree1
Grass4
Weed0
Fri
84°/61°
3
Moderate
Tree1
Grass3
Weed0
Sat
87°/63°
4
High
Tree1
Grass4
Weed0
Sun
84°/61°
3
Moderate
Tree1
Grass3
Weed0
None
Very Low
Low
Moderate
High
Very High

Allergen Breakdown

Grasses
High
Maple
Out of seasonVery Low
Pine
Very Low
Oak
Very Low

Pollen & Allergy Guide for Caldwell, ID

Caldwell, Idaho 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 Caldwell?

Allergy season in Caldwell 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 Caldwell

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.

Caldwell 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 Caldwell

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

Caldwell pollen forecast in the western Treasure Valley

Caldwell allergy conditions are influenced by Treasure Valley agriculture, dry weather, and seasonal plant cycles that can contribute to changing allergen exposure. People searching for a Caldwell pollen forecast often want local context beyond broader regional readings.

Tree pollen, grasses, and weeds can all affect Caldwell residents depending on the season. Daily local forecasting helps users stay ahead of changes in pollen pressure.

Frequently asked questions about pollen in Caldwell

What is the pollen count in Caldwell today?

Today in Caldwell, Idaho, the pollen level is high with an allergy index of 4. The main allergen to watch is Grasses.

When is allergy season in Caldwell, Idaho?

Allergy season in Caldwell, Idaho 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 Caldwell?

If you have seasonal allergies in Caldwell, 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 Caldwell, Idaho?

Caldwell 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.