Atlanta, GA Pollen Levels Today

Atlanta consistently ranks among the most challenging U.S. cities for seasonal allergies, a reputation driven by its humid subtropical climate, dense tree canopy, and long growing season that stretches allergen exposure across much of the year.

Tree pollen dominates from late February through May, with oak, pine, birch, sweetgum, hickory, and mulberry producing the infamous yellow-green film that coats the city each spring; oak and pine are typically the most symptomatic, peaking in late March and April.

As tree counts taper, grass pollen takes over from May through early July, led by Bermuda, Timothy, Johnson, and Kentucky bluegrass, with a smaller resurgence possible in early fall.

Weed season ramps up in August and runs through the first frost, dominated by ragweed, along with pigweed, lamb's quarters, and plantain; September is typically the peak.

Overlaps between late tree and early grass season, and between late grass and early ragweed, often intensify symptoms for multi-sensitive individuals.

Atlanta's warmth and humidity also fuel year-round mold spores (especially Alternaria and Cladosporium), while dust mites thrive indoors and ground-level ozone adds respiratory strain in summer.

Overall, Atlanta's allergy profile is defined by long, overlapping pollen seasons compounded by persistent mold and humidity-related triggers.