AQAEWX The Texas Commission on Environmental Quality (TCEQ) has issued an Ozone Action Day for the San Antonio area for Wednesday, May 13, 2026. Atmospheric conditions are expected to be favorable for producing high levels of ozone air pollution in the San Antonio area on Wednesday. You can help prevent ozone pollution by sharing a ride, walking or riding a bicycle, taking your lunch to work, avoiding drive through lanes, conserving energy, and keeping your vehicle properly tuned. If required, the next Ozone Action Day will be issued by 3 PM on Wednesday, May 13, 2026.