System Maintenance: Please note that system maintenance will take place from Wednesday, October 8, 2025, from 8:00 PM to 11:00 PM. We will be experiencing planned maintenance on our customer information system and will only be able to process gas and electric emergency-related calls by calling 210-353-HELP (4357) or 1-800-870-1006. Online outage reporting and outage map updates will be unavailable.
Air Monitoring Stations
Air Monitoring Links
Keeping an eye on the environment is important to us. In order to ensure better air quality, we own and operate two comprehensive, continuous air-monitoring stations. These stations continually monitor ozone.
We record the presence of this constituent, as well as data on wind speed, wind direction and temperature to gauge how all these elements impact the quality of the air we breathe.