The air monitoring station stands in an industrial area of St. Louis. Recycling facilities for metal surround a large portion of the site; an active railroad lies to the east; and Interstate 70 lies to the west. All of these are potential sources of air pollution. The Branch Street station helps determine public exposure to air pollutants from these sources.
However, due to its particular industrial location, EPA considers the Branch Street station a unique middle-scale site, and monitoring agencies cannot compare its data to the annual standard for PM2.5.
Pollutants
Fine Particulate Matter (PM 2.5)
Departmental information about particulate matter (PM)
- Description of two groups of particulate matter: PM2.5 and PM10
- 1997, 2006 and 2012 standards for PM2.5 plus related documents
- 2006 PM10 standard and pertinent documents
- Annual PM2.5 design values
- 24-Hour PM2.5 design values
- Map of PM2.5 sites
Technical issues can affect ability to deliver quality data. Access a table of symbols with explanation of the problems they represent.
- PM2.5 data in the last column on the right
- Pages of hourly data from 10 days ago through today
- Central Standard Time
Particulate Matter (PM 10)
Departmental information about particulate matter (PM)
- Description of two groups of particulate matter: PM2.5 and PM10
- 1997, 2006 and 2012 standards for PM2.5 plus related documents
- 2006 PM10 standard and pertinent documents
- Information about standard and monitoring
- Expected number of exceedance days in a year
- Map of PM10 monitoring stations
Technical issues can affect ability to deliver quality data. Access a table of symbols with explanation of the problems they represent.
- PM10 data in the fourth column from the left
- Pages of hourly data from 10 days ago through today
- Central Standard Time
100 Branch St.
St. Louis, MO 63102
United States
Air Pollution Control Program
Division of Environmental Quality
P.O. Box 176
Jefferson City, MO 65102-0176
United States