2011 Ozone Season

2011 Ozone Season Air Quality Health Alerts and Exceedances

The following table shows the number of times, indicated in orange, that the San Antonio Metropolitan Area had received a warning and/or exceeded the EPA's Ambient Air Quality Standard for ground-level ozone during the 2011 Ozone Season:
Date Warning Level
High 8-hour reading at a Regulatory Site
05/16/11
No warning
78 - San Antonio Northwest C23
06/06/11
No warning
79 - San Antonio Northwest C23
06/06/11 No warning 76 - Camp Bullis C58
08/27/11
Orange
76 - San Antonio Northwest C23
08/27/11 Orange 76 - Camp Bullis C59
08/28/11
Orange
77 - San Antonio Northwest C23
08/29/11
Orange
76 - Camp Bullis C59
09/07/11
Orange
87 - San Antonio Northwest C23
09/07/11 Orange 78 - Calaveras Lake C59
09/08/11
 Orange
No actual exceedance
09/09/11
 Orange
No actual exceedance
09/10/11
 Orange
 84 - San Antonio Northwest C23
09/11/11
 Orange
 78 - San Antonio Northwest C23
09/12/11
 Orange
 No actual exceedance
10/02/11
  No warning
 78 - San Antonio Northwest C23
10/03/11
  No warning
 79 - San Antonio Northwest C23