Established in 1996, the air monitoring station in Bonne Terre is one of the oldest that the state still operates. It station is not near large air pollution sources and therefore provides important information on regional background levels of the monitored air pollutant concentrations upwind of the St. Louis area and monitors attainment of the ambient air quality standards.
Pollutants
Ozone Pollutant
The primary National Ambient Air Quality Standard for ozone is 0.070 parts per million averaged over eight hours (annual fourth-highest daily maximum 8-hour concentration, averaged over three years). The federal ozone season for monitoring runs from March 1 to Oct. 31.
Departmental information about ozone (O3)
- Description
- Health effects
- Tips to reduce ozone
- 2008 and 2015 standards plus related documents
- Eight-hour ozone design values
- Four highest eight-hour ozone values from beginning of ozone season
- Running list of sites with exceedances from beginning of season
- Monthly number of exceedances, 2022 and 2023
- Daily maximum average eight-hour concentration for each site from beginning of season
- Map of Missouri's ozone monitoring sites
Technical issues can affect ability to deliver quality data. Access a table of symbols with explanation of the problems they represent.
- "P" stands for primary monitor; "S" for secondary monitor
- Data from 10 days ago through current date
- Central Standard Time
15797 Highway D
Bonne Terre, MO 63628
United States
Air Pollution Control Program
Division of Environmental Quality
P.O. Box 176
Jefferson City, MO 65102-0176
United States