Hillcrest High School, Springfield
Site Operator: Springfield/Greene County Air Quality
Pollutants Monitored: Ozone (O3), Nitrogen Dioxide (NO2)
Updated: Monthly April through October.
National Ambient Air Monitoring Standard:
8-hour Standard
The three-year average of the fourth highest daily maximum 8-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.
1-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. Monthly data and data shown graphically is raw, unreviewed and unvalidated data.
| YEAR | NUMBER OF DAYS OVER STANDARD | MAXIMUM 1-HOUR AVERAGE |
MAXIMUM 8-HOUR AVERAGE |
Fourth MAXIMUM 8-HOUR AVERAGE |
| 1993 | 0 | .089 | not available | not available |
| 1994 | 0 | .099 | not available | not available |
| 1995 | 0 | .107 | not available | not available |
| 1996 | 0 | .104 | not available | not available |
| 1997 | 0 | .085 | not available | not available |
| 1998 | 0 | .117 | not available | not available |
| 1999 | 0 | .100 | not available | not available |
| 2000 | 0 | .085 | not available | not available |
| 2001 | 0 | .103 | not available | not available |
| 2002 | 1 | .097 | .085 | .074 |
| 2003 | 1 | .093 | .085 | .072 |
| 2004 | 0 | .079 | .076 | .064 |
| 2005 | 0 | .100 | .083 | .077 |
| 2006 | 1 | .094 | .086 | .074 |
| 2007 | 2 | .101 | .090 | .080 |
| 2008 | ||||
| FIRST QUARTER | not available | not available | not available | not available |
| SECOND QUARTER | not available | |||
| THIRD QUARTER | not available | |||
Graph of Recent Ozone (O3) Data
Updated: Monthly.
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. Monthly data and data shown graphically is raw, unreviewed and unvalidated data.
| YEAR | NUMBER OF EXCEEDANCES | ANNUAL AVERAGE | MAXIMUM 1-HOUR AVERAGE |
| 1993 | 0 | .011 | .076 |
| 1994 | 0 | .013 | .077 |
| 1995 | 0 | .012 | .074 |
| 1996 | 0 | .011 | .071 |
| 1997 | 0 | .011 | .059 |
| 1998 | 0 | .012 | .062 |
| 1999 | 0 | .013 | .074 |
| 2000 | 0 | .012 | .062 |
| 2001 | 0 | .013 | .065 |
| 2002 | 0 | .0107 | .058 |
| 2003 | 0 | .0111 | .128 |
| 2004 | 0 | .0120 | .058 |
| 2005 | 0 | .0115 | .061 |
| 2006 | 0 | .0104 | .072 |
| 2007 | 0 | .0100 | .058 |
| 2008 | |||
| THROUGH FIRST QUARTER |
not available | not available | not available |
Graph of Recent Nitrogen Dioxide (NO2) Data
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