Air Quality Health Alerts
The Air Quality Health Alert notification program is moving with the times. When AACOG receives a forecast of high pollution levels, it issues an Air Quality Health Alert to all local media entities and over 300 local organizations via fax and/or email. Air Quality Health Alerts are now frequently announced with the weather during the morning and evening television network news, on most local radio stations, and in the San Antonio Express-News and the New Braunfels Herald-Zeitung. You can also find the Air Quality Index on the weather page of the Express-News.

2007 Air Quality Health Alerts

Date

Warning Level

High 8-hour reading, Regulatory Site

High 8-hour reading, Non-regulatory Site

08/12/07

Orange

68
San Antonio Northwest C23

70
Elm Creek Elementary C501

08/13/07

Orange

70
San Antonio Northwest C23

86
Elm Creek Elementary C501

08/14/07

Orange

77
San Antonio Northwest C23

75
Bulverde Elementary C503


75
New Braunfels Airport C504

09/21/07

Orange

Data Unavailable

Data Unavailable

09/22/07

Orange

Data Unavailable

Data Unavailable



Air Quality Exceedences
Ozone levels are considered by the U.S. Environmental Protection Agency (EPA) to be unhealthful and exceed the National Ambient Air Quality Standard when they are measured at 85 ppb or higher. The standard is based on averaging air quality measurements over eight-hour blocks of time. EPA uses the average of the annual fourth highest eight-hour daily maximum concentrations from three years of air quality monitoring data to determine a violation of the ozone standard.

High concentrations of ozone can cause shortness of breath, coughing, wheezing, headaches, nausea, eye and throat irritation, and lung damage. People who suffer from lung diseases like bronchitis, pneumonia, emphysema, asthma, and colds have even more trouble breathing when the air is polluted. These effects can be worse in anyone who spends significant periods of time exercising or working outdoors.
(Source: Texas Commission on Environmental Quality)

2007 Four Highest Eight-Hour Ozone Concentrations, as of 09/17/07

Monitoring Site

Highest

2nd Highest

3rd Highest

4th Highest

Date

Value

Date

Value

Date

Value

Date

Value

San Antonio Northwest C23
08/14/07

77

08/15/07

71

08/13/07

70

05/13/07

70

Camp Bullis C58
08/14/07

76

05/13/07

74

05/20/07

70

08/15/07

69

CPS Pecan Valley C678
05/13/07

75

05/19/07

65

05/12/07

65

05/18/07

64

Calaveras Lake C59
05/11/07

73

05/19/07

69

05/13/07

68

08/15/07

67

Elm Creek Elementary C501*
08/13/07

86

08/15/07

85

08/14/07

85

08/12/07

70

Fair Oaks Ranch C502*
05/20/07

80

05/13/07

80

05/19/07

76

05/18/07

76

Heritage Middle School C622
08/15/07

67

08/14/07

66

05/13/07

66

05/11/07

66

Bulverde Elementary C503*
05/13/07

82

08/14/07

75

08/15/07

74

08/13/07

73

City of Garden Ridge C505*
05/13/07

77

09/13/07

75

08/14/07

74

08/15/07

73

New Braunfels Airport C504*
08/14/07

75

05/18/07

73

05/13/07

73

05/11/07

73

Seguin Outdoor Learning Center C506*
05/18/07

74

05/20/07

71

05/13/07

70

08/14/07

68


Source: Texas Commission on Environmental Quality
* - Non-regulatory Site


Air Quality Links




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Natural Resources Outreach
Brenda Williams
Projects Manager
Alamo Area Council of Governments
8700 Tesoro Drive, Suite 700
San Antonio, TX 78217
(210) 362-5200

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