2017 Ozone Season

2017 Exceedances and Alerts


There were four Ozone Action Day forecasts during the 2017 Ozone Season for the Alamo Region, and there were five days when there have been threshold exceedances (that is, ozone was high enough to be considered unhealthy), as indicated in the following table:
Date Alert Level
 Highest 8-hour reading at Regulatory Site
05/06/17 Orange 68 - San Antonio Northwest (orange level was not reached)
05/07/17 No Alert Issued 74 - San Antonio Northwest and 72 - Camp Buillis
06/08/17 No Alert Issued 89 - Camp Bullis and 80 - San Antonio Northwest
08/01/17 No Alert Issued 75 - San Antonio Northwest and 72 - Camp Bullis
08/04/17 No Alert Issued 73 - San Antonio Northwest and 72 - Camp Bullis
08/09/17 Orange 60 - San Antonio Northwest (orange level was not reached)
09/12/17 Orange 68 - Calaveras Lake (orange level was not reached)
09/13/17 Orange 75 - Camp Bullis
10/01/17 Orange 68 - Camp Bullis (orange level was not reached)
10/02/17 Orange 60 - Camp Bullis (orange level was not reached)
For more information, review 2017 Ozone Season Resources.