Environmental Services Program
Mound and Second Street St. Louis
Site Operator: St. Louis City, Division of Air Pollution Control, Technical Services Section.
County: St. Louis City Site ID: 29-510-0087
Pollutants Monitored: Inhalable Particulate (PM2.5), Inhalable Particulate (PM10)
Inhalable Particulate (PM10)
Updated: All data shown is historical this instrument was shut down 2010.
National Ambient Air Monitoring Standard: (24-hour samples; one taken every sixth day) A 24-hour average of 150 ug/m3 (micrograms per cubic meter) and/or an annual average of 50 ug/m 3 (micrograms per cubic meter).
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 24-Hour Average |
|---|---|---|---|
| 2001 | 0 | 34 | 74 |
| 2002 | 0 | 32 | 78 |
| 2003 | 0 | 31 | 62 |
| 2004 | 0 | 26.6 | 58 |
| 2005 | 0 | 32.9 | 65 |
| 2006 | 0 | 25.9 | 71 |
| 2007 | 0 | 25.9 | 71 |
| 2008 | 0 | 22.5 | 70 |
| 2009 | 0 | 20.9 | 40 |
| 2010 | 0 | 35.4 | 104 |
| Instrument shut down in October 2010 | |||
Inhalable Particulate (PM2.5)
Updated: Data shown is historical only. Instrument has been discontinued.
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 |
|---|---|---|---|
| 1999 | 29.0 | 28.9 | 15.81 |
| 2000 | 43.3 | 42.3 | 15.66 |
| 2001 | 51.3 | 42.1 | 15.66 |
| 2002 | 54.7 | 43.0 | 15.60 |
| 2003 | 50.2 | 41.2 | 14.7 |
| 2004 | 47.3 | 42.3 | 13.57 |
| 2005 | 46.7 | 45.3 | 15.88 |
| 2006 | 35.8 | 35.0 | 13.65 |
| 2007 | 47.9 | 47.9 | 14.34 |
| 2008 | 32.5 | 32.5 | 12.67 |
| 2009 (Instrument shut down in May 2009) | |||
| Through Second Quarter |
27.1 | 26.3 | 11.53 |
Beginning | Index | Current Data | Site Map | K.C. Data
