Site Operator: Missouri Department of Natural Resources' Environmental Services Program.

Pollutants Monitored: Inhalable Particulate (PM2.5)


Inhalable Particulate (PM2.5)

Updated: Within 90 days after the end of a quarter.

National Ambient Air Quality 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 not available not available not available
2000 42.3 39.2 15.78
2001` 52.5 40 14.8
2002 67.2 46 15.3
2003 48.7 40.8 14.4
2004 39.5 35.0 13.09
2005 48.3 46.9 15.86
2006 35.4 33.8 13.12
2007 45.0 41.3 14.04
2008 34.2 32.1 12.54
2009 44.2 29.2 11.89
Year First Maximum
24-Hour Average
98th Percentile Annual
Average
2010 41.7 24.7 12.35
This site came under the control of Missouri Department of Natural Resources on September 1, 2011.
2011 31.2 28.5 12.50
Data from 2012 on is collected from a continiously operated TEOM DF.
2012 29.4 21.0 9.08
2013
Second Quarter 27.4 24.5 10.57

Photograph of the South Broadway Monitoring Site


 

 

 

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