Ozone Action Day for Monday, September 18, 2023

Published on September 17, 2023

SAN ANTONIO (September 17, 2023) - The Texas Commission on Environmental Quality (TCEQ) has issued an Ozone Action Day for the San Antonio area for Monday, September 18, 2023.    

Atmospheric conditions are expected to be favorable for producing high levels of ozone air pollution in the San Antonio area tomorrow. This is the eleventh Ozone Action Day in 2023.  

On Ozone Action Days, young children, older adults, and those with respiratory problems, such as asthma, emphysema, and bronchitis are especially vulnerable to the effects of air pollution and should limit outdoor activities. Those who have asthma or difficulty breathing are strongly encouraged to stay indoors. 

To help keep our air healthy, residents and businesses are encouraged to voluntarily practice certain pollution-reducing activities such as:

• Refueling cars and trucks after 6 p.m.
• Avoid using the drive-thru at restaurants. Go inside instead.
• Turning a vehicle off instead of idling.
• Setting thermostats 2 to 3 degrees higher from 2 to 7 p.m.; setting programmable thermostats to higher temperatures when no one is home. The optimum energy-saving temperature is 78 degrees.
• Carpooling or using public transportation.
• Combining errands to reduce trips.

The City of San Antonio Metropolitan Health District (Metro Health) encourages everyone to act and help improve our air quality and conserve energy. For more detailed information about ground-level ozone, the community can visit Metro Health’s website (www.sanantonio.gov/health).