Environmental Services Program

Forest Park, Near Road Monitoring Site

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

County: St. Louis City       Site ID: 29-510-0094

Pollutants Monitored: Inhalable Particulate (PM2.5), Carbon Monoxide (CO) Trace, Nitrogen Dioxide (NO2)

 


 

Inhalable Particulate (PM2.5)

Updated: Quarterly.

National Ambient Air Monitoring Standard: (24-hour samples; taken evey 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. Monthly

Inhalable Particulate (PM2.5)

The units for all averages in this chart are micrograms per cubic meter.
Year First Maximum
24-Hour Average
98th Percentile Value Annual
Average
2013
Through Second Quarter 29.1 20.5 9.78

 


 

Carbon Monoxide (CO)

Updated: Quarterly.

National Ambient Air Monitoring Standard: A one-hour average of 35 ppm (parts per million) and/or an eight-hour average of 9 ppm (parts per million).

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.

Carbon Monoxide (CO)

The units for all averages in this chart are parts per billion.
Year Number of
Exceedances
Maximum
8-Hour Average
Maximum
1-Hour Average
2013
Second Quarter 0 1.0 1.656

 


Nitrogen Dioxide (NO2)

Updated: Quarterly.

National Ambient Air Monitoring Standard: An annual average of 0.053 ppm (parts per million).

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. Monthly data and data shown graphically is raw, unreviewed and unvalidated data.

Nitrogen Oxides (NO2)

The units for all averages in this chart are parts per billion.
Year Number of
Exceedances
Annual
Average
Maximum
1-Hour Average
98th Percentile
2013
Through
Second Quarter
0 14.06 95.8 66.8

 

Forest Park Air Monitoring site