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.

Inhalable Particulate (PM10)

The units for all averages in this chart are micrograms per cubic meter.
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.

Inhalable Particulate (PM2.5)

The units for all averages in this chart are micrograms per cubic meter.
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

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