
Dr. Amy Dowden
UI Health Care / University of Iowa Physicians
Check today's pollen count by city in Iowa. 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.
Pollen levels in Iowa 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 Des Moines, Cedar Rapids, Davenport, Sioux City, Ankeny, Iowa City.
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Local allergy care
Use today's pollen forecast alongside nearby allergy and immunology profiles when symptoms need clinical follow-up, testing, or long-term treatment planning.

UI Health Care / University of Iowa Physicians

Medical Associates Clinic - Allergy Dept

UI Health Care / University of Iowa Physicians

UI Health Care / University of Iowa Physicians

Medical Associates Clinic - Allergy Dept

Sioux City Allergy & Asthma Associates
Showing 6 of 18 published allergist profiles in this area.
Iowa 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.
Iowa’s open terrain lets wind move pollen, dust, grass particles, and ragweed across long distances. A front can clear the air for a while, then quickly replace it with new pollen from fields, roadsides, and nearby cities.
Usually, no. Corn pollen can bother some people near fields during tasseling, but late-summer and fall symptoms are more often tied to ragweed and other weeds because their lighter pollen travels farther.
Ragweed usually becomes noticeable in August and often remains important into September or October. Dry, breezy weather can spread both common ragweed and giant ragweed pollen across metro and rural areas.
Eastern Iowa has more river-corridor moisture, wooded neighborhoods, and storm-track influence, while Des Moines reflects central Iowa suburbs, parks, and open-field edges. Those differences can change the main allergen and daily severity.
Today's statewide signal
Iowa allergy conditions shift with spring tree bloom, prairie and lawn grasses, crop-country wind, river corridors, storms, and late-summer ragweed. Compare Des Moines, Cedar Rapids, Davenport, Sioux City, Ankeny, Iowa City, West Des Moines, and Ames for local pollen levels, dominant allergens, weather context, and short-term trend signals.
Data updates regularly to reflect current conditions across Iowa cities.
Highest city index now
Davenport
Ragweed · High
4
Live city comparison
Sort Iowa cities by pollen index, temperature, or trend. Select a city for its full local forecast.
| Main allergen | Weather context | ||||
|---|---|---|---|---|---|
| Davenport | 4High | Ragweed | Stable Tomorrow looks similar, near high conditions. | 63°F | Partly sunny Watch ragweed levels and limit long outdoor exposure during peak hours. |
| Ankeny | 4High | Ragweed | Falling Forecast eases toward none conditions tomorrow. | 63°F | Partly sunny 14 mph wind can disperse ragweed pollen quickly today. |
| West Des Moines | 4High | Ragweed | Falling Forecast eases toward very low conditions tomorrow. | 63°F | Partly sunny 14 mph wind can disperse ragweed pollen quickly today. |
| Des Moines | 0None | None | Stable Tomorrow looks similar, near none conditions. | 63°F | Humid Outdoor pollen exposure looks limited for most people today. |
| Cedar Rapids | 0None | None | Stable Tomorrow looks similar, near none conditions. | 63°F | Humid Outdoor pollen exposure looks limited for most people today. |
| Sioux City | 0None | None | Stable Tomorrow looks similar, near none conditions. | 64°F | Breezy Breezy conditions may lift pollen from trees, grasses, weeds, and surfaces. |
| Iowa City | 0None | None | Stable Tomorrow looks similar, near none conditions. | 63°F | Partly sunny Outdoor pollen exposure looks limited for most people today. |
| Ames | 0None | None | Stable Tomorrow looks similar, near none conditions. | 63°F | Breezy Breezy conditions may lift pollen from trees, grasses, weeds, and surfaces. |
Ragweed is the main allergen
Pollen index
4
Trend
Stable
Watch ragweed levels and limit long outdoor exposure during peak hours.
Ragweed is the main allergen
Pollen index
4
Trend
Falling
14 mph wind can disperse ragweed pollen quickly today.
Ragweed is the main allergen
Pollen index
4
Trend
Falling
14 mph wind can disperse ragweed pollen quickly today.
None is the main allergen
Pollen index
0
Trend
Stable
Outdoor pollen exposure looks limited for most people today.
None is the main allergen
Pollen index
0
Trend
Stable
Outdoor pollen exposure looks limited for most people today.
None is the main allergen
Pollen index
0
Trend
Stable
Breezy conditions may lift pollen from trees, grasses, weeds, and surfaces.
None is the main allergen
Pollen index
0
Trend
Stable
Outdoor pollen exposure looks limited for most people today.
None is the main allergen
Pollen index
0
Trend
Stable
Breezy conditions may lift pollen from trees, grasses, weeds, and surfaces.
Regional allergy forecast
Central Iowa combines mature neighborhood trees, suburban lawns, parks, university landscapes, construction edges, and nearby field borders. Wind can move grass and ragweed pollen across the metro quickly.
Cedar Rapids, Iowa City, and Davenport sit near river corridors, wooded neighborhoods, campuses, parks, and humid storm tracks. Spring trees and fall ragweed can feel stronger after fast weather changes.
Sioux City has more western Iowa wind exposure, river-bluff terrain, open land, grasses, cottonwood corridors, and field-edge weeds. Dry breezes can make pollen and dust feel more irritating.
State-specific pollen calendar
April to May
Maple, oak, elm, birch, cottonwood, ash, cedar or juniper, and walnut can drive spring symptoms. Southern and river-corridor locations may start slightly earlier in warm springs.
May to July
Bluegrass, timothy, brome, ryegrass, orchard grass, lawns, parks, roadsides, pastures, and field edges can raise grass pollen during warm, dry, breezy stretches.
August to October
Common ragweed and giant ragweed are major late-season triggers, with pigweed, lamb’s quarters, plantain, and other disturbed-ground weeds adding pressure until repeated cold nights or a hard freeze.
November to March
Outdoor pollen usually drops after hard freezes, but indoor dust, pet dander, basement mold, dry heated air, and spring thaw moisture can still irritate symptoms.
Weather-pollen correlation
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.