Environmental Services Program
South Lindbergh, Sunset Hills
Site Operator: St. Louis County Department of Health, Air Pollution Monitoring Program.
County: St. Louis Site ID: 29-189-0004
Pollutants Monitored: None Site is Inactive
Ozone (O3)
Updated: Only historic data is shown. Instrument was shut down prior to 2009 monitoring season.
National Ambient Air Monitoring Standard:
Eight-hour Standard
The three-year average of the fourth highest daily maximum eight-hour average must not be greater than .08 ppm (parts per million). Data reported in three decimal places must be rounded to two decimal places.
One-hour Standard 1970 to 1997-no longer applies to any area in Missouri.
A one-hour average of 0.12 ppm (parts per million).
Exceedances allowed without a violation being recorded:
The term exceedance does not apply to the 8-hour standard. The three-year average is used to determine designation of attainment or non-attainment.
Disclaimer: Yearly and quarterly data shown below has been subject to data review and validation procedures by the reporting agency.
| Year | Number of Days Over Standard |
Maximum 1-Hour Average |
Maximum 8-Hour Average |
Fourth Maximum 8-Hour Average |
|---|---|---|---|---|
| 1998 | 1 | 0.145 | not available | not available |
| 1999 | 0 | 0.124 | not available | not available |
| 2000 | 0 | 0.107 | not available | not available |
| 2001 | 0 | 0.110 | not available | not available |
| 2002 | 16 | 0.130 | 0.114 | 0.098 |
| 2003 | 4 | 0.128 | 0.107 | 0.088 |
| 2004 | 0 | 0.089 | 0.76 | 0.070 |
| 2005 | 6 | 0.122 | 0.108 | 0.089 |
| 2006 | 1 | 0.108 | 0.098 | 0.080 |
| 2007 | 8 | 0.126 | 0.101 | 0.089 |
| 2008 | 0 | 0.092 | 0.073 | 0.067 |
| Instrument shut down in 2009 prior to ozone season | ||||
Nitrogen Dioxide (NO2)
Updated: Only historic data is shown. Instrument was shut down in 2010.
National Ambient Air Monitoring Standard: An annual average of 0.053 ppm (parts per million).
Exceedances allowed without a violation being recorded: None.
Disclaimer: Yearly and quarterly data shown below has been subject to data review and validation procedures by the reporting agency.
| Year | Number of Exceedances |
Annual Average |
Maximum 1-Hour Average |
|---|---|---|---|
| 1998 | 0 | 0.019 | 0.073 |
| 1999 | 0 | 0.018 | 0.080 |
| 2000 | 0 | 0.016 | 0.154 |
| 2001 | 0 | 0.015 | 0.074 |
| 2002 | 0 | 0.0144 | 0.064 |
| 2003 | 0 | 0.0136 | 0.061 |
| 2004 | 0 | 0.0126 | 0.052 |
| 2005 | 0 | 0.0121 | 0.057 |
| 2006 | 0 | 0.0114 | 0.056 |
| 2007 | 0 | 0.0112 | 0.052 |
| 2008 | 0 | 0.0101 | 0.051 |
| 2009 | 0 | 0.0087 | 0.044 |
| 2010 | |||
| Through Second Quarter | 0 | 0.00915 | 0.050 |
| Instrument shut down in 2010 | |||
Sulfur Dioxide (SO2)
Updated: Only historical data shown below. Instrument has been discontinued.
National Ambient Air Monitoring Standard: A three-hour average of 0.50 ppm (parts per million) and/or a 24-hour average of 0.14 ppm (parts per million) and/or an annual average of 0.03 ppm (parts per million). Data reported in three decimal places must be rounded to two decimal places.
Exceedances allowed without a violation being recorded: One per year.
Disclaimer: Yearly and quarterly data shown below has been subject to data review and validation procedures by the reporting agency.
| Year | Number of Exceedances |
Annual Average |
Maximum 24-Hour Average |
Maximum 3-Hour Average |
Maximum 1-Hour Average |
|---|---|---|---|---|---|
| 1998 | 0 | 0.006 | 0.032 | 0.093 | 0.116 |
| 1999 | 0 | 0.007 | 0.022 | 0.078 | 0.133 |
| 2000 | 0 | 0.005 | 0.024 | 0.072 | 0.172 |
| 2001 | 0 | 0.004 | 0.019 | 0.053 | 0.109 |
| 2002 | 0 | 0.0035 | 0.013 | 0.051 | 0.099 |
| 2003 | 0 | 0.0034 | 0.017 | 0.080 | 0.156 |
| 2004 | 0 | 0.0036 | 0.021 | 0.074 | 0.170 |
| 2005 | 0 | 0.0031 | 0.018 | 0.036 | 0.058 |
| 2006(instrument removed) | |||||
Inhalable Particulate (PM2.5)
Updated: Only historic data is shown. Instrument was shut down in 2007.
National Ambient Air Monitoring Standard: (24-hour samples; one taken every third day) A three year average of the 98th percentile 24-hour averages equal or greater than 35 ug/m3 (micrograms per cubic meter) and/or a three year average of annual averages equal or greater than 15.0 ug/m3 (micrograms per cubic meter).
Exceedances allowed without a violation being recorded: Two percent of daily observations
Disclaimer: Yearly and quarterly data shown below has been subject to data review and validation procedures by the reporting agency.
| Year | First Maximum 24-Hour Average |
Second Maximum 24-Hour Average |
Annual Average |
|---|---|---|---|
| 2001 | 28.1 | 26.3 | 12.4 |
| 2002 | 40.3 | 35.9 | 13.0 |
| 2003 | 44.0 | 32.6 | 13.0 |
| 2004 | 38.9 | 32.6 | 11.59 |
| 2005 | 43.8 | 38.3 | 15.49 |
| 2006 | 27.9 | 23.3 | 10.52 |
| 2007(instrument removed) | |||
Carbon Monoxide (CO)
Updated: Only historic data is shown. Instrument was shut down in 2010.
National Ambient Air Monitoring Standard: A one-hour average of 35 ppm (parts per million) and/or an eight-hour average of 9 ppm (parts per million).
Exceedances allowed without a violation being recorded: None.
Disclaimer: Yearly and quarterly data shown below has been subject to data review and validation procedures by the reporting agency.
| Year | Number of Exceedances |
Maximum 8-Hour Average |
Maximum 1-Hour Average |
|---|---|---|---|
| 2005 | 0 | 1.3 | 1.7 |
| 2006 | 0 | 1.3 | 1.6 |
| 2007 | 0 | 1.0 | 1.6 |
| 2008 | 0 | 1.2 | 1.4 |
| 2009 | 0 | 0.7 | 1.0 |
| 2010 | |||
| First Quarter | 0 | 0.6 |
0.8 |
| Second Quarter | 0 | ||
| Third Quarter | 0 | ||
| Instrument shut down in October 2010 | |||
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