Idaho Pollen Count Today

Check today's pollen count by city in Idaho. Explore local allergy forecasts, monitor common seasonal allergens, and use city-level trends to plan around high pollen days.

Allergy Ava organizes statewide and local pollen information so you can compare conditions, anticipate seasonal flare-ups, and find relevant allergy forecast pages faster.

Today's pollen count in Idaho

Pollen levels in Idaho can vary by city, weather, vegetation, and season. Choose a local forecast below to see the current allergy index, main allergen, and 5-day outlook for cities including Boise, Meridian, Nampa, Idaho Falls, Pocatello, Caldwell.

Today's statewide signal

Idaho pollen count by city: Treasure Valley trees, Snake River grass, and sagebrush weeds

Idaho allergy conditions vary between the Treasure Valley, the Snake River Plain, eastern Idaho’s higher valleys, and the wetter northern Panhandle. Compare Boise, Meridian, Nampa, Idaho Falls, Pocatello, Caldwell, Coeur d’Alene, and Twin Falls for local pollen levels, dominant allergens, weather context, and short-term trend signals.

Data updates regularly to reflect current conditions across Idaho cities.

Highest city index now

Idaho Falls

Ragweed · Very Low

View today's allergy index

Average pollen index: 0
Average humidity: 64%
Average wind: 10 mph

Live city comparison

Today's pollen and weather by city

Sort Idaho cities by pollen index, temperature, or trend. Select a city for its full local forecast.

		Main allergen			Weather context
Idaho Falls	1Very Low	Ragweed	Rising Forecast moves toward low conditions tomorrow.	82°F	Humid Outdoor pollen exposure looks limited for most people today.
Pocatello	1Very Low	Ragweed	Stable Tomorrow looks similar, near very low conditions.	82°F	Partly sunny Outdoor pollen exposure looks limited for most people today.
Coeur d'Alene	1Very Low	Ragweed	Stable Tomorrow looks similar, near very low conditions.	82°F	Partly sunny Outdoor pollen exposure looks limited for most people today.
Boise	0None	None	Rising Forecast moves toward low conditions tomorrow.	82°F	Humid Outdoor pollen exposure looks limited for most people today.
Meridian	0None	None	Rising Forecast moves toward very low conditions tomorrow.	82°F	Partly sunny Outdoor pollen exposure looks limited for most people today.
Nampa	0None	None	Stable Tomorrow looks similar, near none conditions.	82°F	Partly sunny Outdoor pollen exposure looks limited for most people today.
Caldwell	0None	None	Stable Tomorrow looks similar, near none conditions.	82°F	Partly sunny Outdoor pollen exposure looks limited for most people today.
Twin Falls	0None	None	Rising Forecast moves toward very low conditions tomorrow.	82°F	Partly sunny Outdoor pollen exposure looks limited for most people today.

Idaho Falls

Ragweed is the main allergen

Very Low

Pollen index

Trend

Rising

82°14 mph75%

Outdoor pollen exposure looks limited for most people today.

Pocatello

Ragweed is the main allergen

Very Low

Pollen index

Trend

Stable

82°11 mph66%

Outdoor pollen exposure looks limited for most people today.

Coeur d'Alene

Ragweed is the main allergen

Very Low

Pollen index

Trend

Stable

82°12 mph68%

Outdoor pollen exposure looks limited for most people today.

Boise

None is the main allergen

None

Pollen index

Trend

Rising

82°6 mph78%

Outdoor pollen exposure looks limited for most people today.

Meridian

None is the main allergen

None

Pollen index

Trend

Rising

82°7 mph52%

Outdoor pollen exposure looks limited for most people today.

Nampa

None is the main allergen

None

Pollen index

Trend

Stable

82°12 mph55%

Outdoor pollen exposure looks limited for most people today.

Caldwell

None is the main allergen

None

Pollen index

Trend

Stable

82°9 mph60%

Outdoor pollen exposure looks limited for most people today.

Twin Falls

None is the main allergen

None

Pollen index

Trend

Rising

82°11 mph56%

Outdoor pollen exposure looks limited for most people today.

Regional allergy forecast

How Idaho regions compare today

Boise, Meridian, Nampa, and Caldwell Treasure Valley

The Treasure Valley combines cottonwoods and willows along water corridors, urban and suburban trees, irrigated lawns, farm edges, valley inversions, foothill wind, grasses, and late-season weeds.

CottonwoodMapleBluegrassRagweed

Index: —
Humidity: 61%
Wind: 9

Idaho Falls, Pocatello, and Twin Falls Snake River Plain

South-central and eastern Idaho have a drier, higher-elevation pattern shaped by the Snake River corridor, agriculture, sagebrush steppe, wind, grasses, and abrupt spring-to-summer transitions.

JuniperWillowGrassSagebrush

Index: 1
Humidity: 66%
Wind: 12

Coeur d’Alene and the northern Idaho Panhandle

North Idaho has more lake influence, forest cover, cooler spring weather, conifers, hardwoods, grasses, and moisture-driven mold than the southern valleys. Spring trees and damp-season mold can feel more prominent here.

CedarPineGrassMold

Index: 1
Humidity: 68%
Wind: 12

State-specific pollen calendar

When major allergens are active in Idaho

Trees

March to May

MarAprMay

Cottonwood, willow, maple, juniper, ash, walnut, alder, cedar, and pine can drive spring symptoms. Southern valleys may start earlier, while northern and higher-elevation cities may lag in cool springs.

Grasses

May to July

MayJunJul

Bluegrass, timothy, orchard grass, ryegrass, fescue, lawns, parks, field edges, and irrigated landscapes can raise grass pollen during warm, dry, breezy stretches.

Weeds

August to October

AugSepOct

Ragweed, sagebrush, wormwood, pigweed, chenopods, tumbleweed, and other dryland or disturbed-ground weeds can drive late-season symptoms until colder nights or a hard freeze.

Winter lull

November to February

NovDecJanFeb

Hard freezes and snow cover usually lower outdoor pollen, but indoor dust, pet dander, mold in damp spaces, wood smoke, and winter inversions can still bother sensitive residents.

Weather-pollen correlation

What weather means for today's allergy risk

Wind can disperse pollen, rain can temporarily wash particles down, and humidity can increase mold irritation. The city table combines pollen and weather signals so users can compare outdoor risk without opening every city page.

Loading city data

Preparing today's Idaho pollen dashboard

Local allergy care

Allergists near Idaho

Use today's pollen forecast alongside nearby allergy and immunology profiles when symptoms need clinical follow-up, testing, or long-term treatment planning.

View all 5

Dr. Charles Webb

The Allergy Group

Boise, ID 83706

Call to confirm availability

(208) 377-4000

View profile

Dr. Gregory Wickern

Asthma & Allergy of Idaho

Rexburg, ID 83440

Call to confirm availability

(208) 360-7357

View profile

Dr. Jeremy Waldram

The Allergy Group

Boise, ID 83706

Accepting new patients

(208) 377-4000

View profile

Dr. Neetu Talreja

The Allergy Group

Boise, ID 83706

Accepting new patients

(208) 377-4000

View profile

Dr. Shayne Stokes

Asthma & Allergy of Idaho

Rexburg, ID 83440

Call to confirm availability

(208) 360-7357

View profile

About Pollen in Idaho

Idaho allergy sufferers can use this page to monitor pollen trends and find relevant city forecasts when available. Pollen levels vary by season, with tree pollen often peaking in spring, grass pollen becoming more active in late spring and summer, and weed pollen, especially ragweed, remaining a concern in late summer and fall.

Use Allergy Ava's city-level forecasts to plan outdoor activities, manage medication timing, and stay informed about the allergens most prevalent in your area. Our data is updated regularly to give you the most accurate picture of current conditions.

Frequently asked questions about Idaho pollen forecasts

Why can Boise and Meridian allergies feel worse than nearby rural areas?

The Treasure Valley has a mix of irrigated lawns, street trees, farm edges, foothill wind, river corridors, and valley air patterns. Pollen can collect in calm periods and then spread quickly when wind picks up.

How is Coeur d’Alene different from Boise for allergies?

Coeur d’Alene is cooler, wetter, more forested, and more lake-influenced than the Treasure Valley. Boise, Meridian, Nampa, and Caldwell are drier and more valley-and-irrigation influenced, with stronger dryland weed and dust effects later in the season.

Is sagebrush the same as ragweed in Idaho?

No. Sagebrush and ragweed are different plants, but both can contribute to late-season weed pollen symptoms. Sagebrush, wormwood, ragweed, chenopods, and tumbleweed-type plants can all matter in Idaho’s drier regions.

Does Idaho’s cold winter end pollen season?

Usually, sustained freezes and snow sharply reduce outdoor pollen. Winter symptoms may still come from indoor dust, pets, mold, dry heated air, wood smoke, or inversion-related irritation.