Environmental Services Program
Missouri Sulfur Dioxide (SO2)
Air Monitoring Sites
=Active Site
=Inactive Site or instrument
Currently Monitoring SO2
Blair Street, St. Louis City ![]()
Pollutant(s) Monitored:
- Trace Sulfur Dioxide (SO2)
- Trace Nitrogen Dioxide (NO2)
- Inhalable Particulate (PM2.5)
- Inhalable Particulate (PM10)
- Ozone (O3)
- Carbon Monoxide (CO)
Buick Northeast , Iron County ![]()
Pollutant(s) Monitored:
- Lead (Pb)
- Sulfer Dioxide (SO2)
James River South, Springfield, Green County
Pollutant(s) Monitored:
- Sulfur Dioxide (SO2)
Margaretta, St. Louis City ![]()
Pollutant(s) Monitored:
- Sulfur Dioxide (SO2)
- Nitrogen Dioxide (NO2)
- Ozone (O3)

- Carbon Monoxide (CO)

- Inhalable Particulate (PM10)
- Inhalable Particulate (PM2.5)
Mark Twain State Park, Stoutsville, Monroe County
Pollutant(s) Monitored:
- Sulfur Dioxide (SO2)
- Ozone (O3)
- Inhalable Particulate (PM10)
Herculaneum, Mott Street Jefferson County ![]()
Pollutant(s) Monitored:
- Sulfur Dioxide (SO2)
- Lead (Pb)
South Charleston, Springfield, Green County
Pollutant(s) Monitored:
- Sulfur Dioxide (SO2)
Troost, Kansas City ![]()
Pollutant(s) Monitored:
- Sulfur Dioxide (SO2)
- Nitrogen Dioxide (NO2)
- Inhalable Particulate (PM2.5)
- Inhalable Particulate (PM10)
2230 E. Wildwood Lane, Springfield, Green County
Pollutant(s) Monitored:
- Sulfur Dioxide (SO2)
Historically Measured SO2
Hunter Avenue, Ladue ![]()
Maryland Heights, St Louis County
South Broadway and Hurck, St. Louis City ![]()
Missouri State University, Springfield, Green County ![]()
Main Street, Herculaneum, Jefferson County ![]()
South Lindbergh, Sunset Hills , St Louis County ![]()
1422 E. Wisdom Lane, Springfield, Green County ![]()
Glover South Site, Glover, Iron County
Weidman Road, Queeny Park
Clarksville, Pike County ![]()
KCI Airport, Kansas City ![]()
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