2015 Ozone Season

2015 Ozone Action Day Alerts and Daily Exceedances of Ozone Standard

The following table shows the number of times, indicated in orange, that the San Antonio-New Braunfels MSA received an Ozone Action Day warning and/or exceeded the EPA's 2008 Ambient Air Quality Standard for ground-level ozone during the 2015 Ozone Season, set at 75 parts per billion (ppb):


  Alert Level*

High 8-hour reading at a Regulatory Site


No Alert Issued

 78 ppb - Camp Bullis
 05/02/15 No Alert Issued  77 ppb - San Antonio Northwest
 08/02/15  Orange Orange level was not reached
 08/03/15  No Alert Issued  76 ppb - San Antonio Northwest
 80 ppb - Camp Bullis
 08/13/15  No Alert Issued   79 ppb- San Antonio Northwest
 08/15/15  No Alert Issued   78 ppb - San Antonio Northwest
 08/27/15 Orange   83 ppb- San Antonio Northwest
 87 ppb - Camp Bullis
 08/28/15 No Alert Issued    87 - San Antonio Northwest
 88 - Camp Bullis
 08/29/15  No Alert Issued   85 - San Antonio Northwest
 88 - Camp Bullis
* Ozone Action Day alert are issued when it is predicted that the region's ozone will reach the orange level or higher on the Air Quality Index. At the orange level, our air is unhealthy for sensitive groups, including children, people who are active for prolonged periods outdoors, and those with respiratory illnesses. At the next highest level, red, prolonged outdoor exposure is considered unhealthy for everyone.