September and October are known for ragweed season and pollen from some fall trees. In December and January, Austin has cedar fever. February through May, the city sees pollen from spring trees ...
But these aren’t as common: Pollen, such as ragweed, grass, and tree pollen Stings or bites from bees, wasps, yellow jackets, hornets, and fire ants Latex, found in hospital gloves, balloons ...