Allergies in San Antonio, TX are mainly caused by pollen from trees, grass, and weeds. The amount of pollen in the air varies by season and geographic area. The peak season for tree pollen is in the months of February, March, and April, while grass pollen is produced from May to October. Ragweed pollen is another common allergen that blooms from August to November. Other sources of pollen in San Antonio include elm, pecan, ash, mulberry, pigweed, and sagebrush.

To manage allergies, it is recommended to keep windows and doors closed, especially on windy days, and to avoid outdoor activities in the early morning. Taking a shower and changing clothes after coming indoors can also help alleviate symptoms. Additionally, allergy medication can be used to manage symptoms.

It is important to note that pollen is one of the common triggers of asthma, which is a chronic lung condition that causes inflammation and narrowing of the airways. When people with asthma inhale pollen, their immune system reacts by releasing chemicals that cause symptoms such as coughing, wheezing, shortness of breath, and chest tightness.