Is it allergy season in Arkansas?

Arkansas occupies a unique allergen crossroads. Western Arkansas near Fort Smith receives mountain cedar pollen drifting east from Oklahoma during January south wind events — an early winter allergy season most residents don't associate with pollen. Spring brings heavy oak and maple from the Ozark and Ouachita forests. Summer grass pollen is significant. And the Arkansas River valley and Mississippi Delta lowlands trap ragweed pollen intensely in late summer and fall, with Little Rock sitting in one of the Mid-South's high ragweed production zones.

Arkansas's varied terrain — from the Ozark Plateau in the northwest to the flat Delta lowlands in the east — creates meaningful regional differences. Fayetteville and the Ozarks see a season more similar to Missouri and Tennessee. Fort Smith and western Arkansas are in the Oklahoma cedar zone. Jonesboro and the Delta lowlands resemble Mississippi's pattern.

Little Rock Metro

Arkansas River valley trapping

Little Rock sits in the Arkansas River valley, which concentrates pollen on still days. The city experiences heavy oak and maple in spring, significant grass through summer, and intense ragweed in late summer. The river valley geography keeps counts elevated longer than open terrain would allow.

Oak · Mar–MayGrass · May–JulRagweed · Aug–Oct

Fayetteville / Ozarks

Forested plateau with Missouri-like timing

The Ozark Plateau around Fayetteville and Springdale is heavily forested with oak, hickory, and cedar. Spring tree pollen is diverse and substantial. The NW Arkansas corridor — one of the fastest-growing metro areas in the country — sees an urban heat island developing that's beginning to advance pollen timing.

Oak/Hickory · Mar–MayGrass · May–JulRagweed · Aug–Sep

Fort Smith / Western AR

Oklahoma cedar belt eastern edge

Fort Smith sits near the Oklahoma border where mountain cedar pollen drifts east during January south wind events. Cedar fever is real in western Arkansas, though less intense than the Texas epicenter. Oak and hickory from the Ouachita Mountains add diversity to the spring season.

Cedar · Jan–Feb (drift)Oak · Mar–MayRagweed · Aug–Sep

Jonesboro / Delta

Mississippi River corridor and flat terrain

Eastern Arkansas near Jonesboro transitions into the Mississippi Delta — flat, humid, and agriculturally intense. Grass pollen from Delta farmland is substantial. Ragweed production from disturbed agricultural margins is particularly high, with timing similar to neighboring Mississippi.

Grass · May–Aug (Delta)Ragweed · Aug–OctFlat terrain dispersal

Each row shows a full year of pollen for one region — trees in blue, grasses in green, weeds in amber. Look for where all three rows go quiet at the same time — that's your window.

Oral Allergy Syndrome (also called pollen-food allergy syndrome) causes tingling or mild itching in the mouth when you eat certain raw foods during the relevant pollen season. The proteins in the food are similar enough to the pollen protein that your immune system cross-reacts. Cooking usually deactivates the offending protein, so the same food cooked may cause no reaction.

Oak & Hickory pollen

Stone fruits & apples

Apples, peaches, cherries, plums, pears, almonds, hazelnuts, carrots, celery

Peak risk March–May in Arkansas. Ozark and Ouachita hardwood forests produce substantial oak and hickory pollen. OAS reactions are most common during the April peak when counts reach very high levels.

Grass pollen

Tomatoes, potatoes & melons

Tomatoes, potatoes, kiwi, watermelon, cantaloupe, oranges (in some cases)

Peak risk May–July. The Delta's agricultural areas produce high grass counts. NW Arkansas suburban lawn grass adds to the Timothy and Bermuda burden statewide.

Ragweed

Melons & bananas

Watermelon, cantaloupe, honeydew, banana, zucchini, cucumber, sunflower seeds

Peak risk August–October. Little Rock and the Arkansas River valley are among the Mid-South's most ragweed-affected metros. The valley geography traps pollen on still fall evenings.

Not medical advice. If you suspect OAS, speak with an allergist — it can sometimes progress, and symptoms that extend beyond the mouth should be evaluated.