Little Rock, AR Pollen Levels Today

Little Rock sits in central Arkansas within a humid subtropical climate, where mild winters, warm springs, and long humid summers create an extended and often intense allergy season.

Tree pollen typically kicks off in late February and peaks through March and April, with oak, cedar, elm, pecan, hickory, sweetgum, and mulberry among the most prolific local producers. As tree counts begin to taper in May, grass pollen takes over and remains a consistent irritant through summer into early fall, with Bermuda, Johnson, Timothy, and Kentucky bluegrass being the dominant triggers in the region.

Late summer ushers in weed pollen season, which runs from August through the first hard frost in October or November. Ragweed is by far the most aggressive offender, joined by pigweed, lamb's quarters, plantain, and sagebrush.

The transition periods—particularly the overlap between late tree and early grass season in May, and between grass and weed season in August—often intensify symptoms for multi-sensitive individuals.

Beyond pollen, Little Rock's persistent humidity fuels high outdoor mold spore counts nearly year-round, while dust mites and seasonal ozone contribute additional indoor and outdoor triggers.

Overall, the city's allergy profile is defined by a long, overlapping pollen calendar compounded by substantial mold pressure.