Pollen season in Atlanta typically ends around late September to early October. The warmer climate in Metro Atlanta allows weed pollen, especially ragweed, to linger slightly longer, but cooler nights in early fall gradually reduce pollen production. Ragweed and other weed pollens are the main allergens during this late summer to fall period. In some cases, depending on weather conditions, pollen season can extend into October. Generally, pollen season in Georgia runs from about January through late September or early October, with the peak allergy months being spring (March-May) and late summer to fall (August-October).