El Dorado Springs Air Monitoring Site

The El Dorado Springs station monitors ground-level ozone and fine particulate matter. It is not close to urban areas or large air pollution sources, so it provides information on regional background levels of the monitored air pollutants and tracks attainment of the national ambient air quality standards (NAAQS). Pollutants historically monitored at this site include nitrogen dioxide from 1998-2003.

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

Air Quality Analysis Ozone - Weekly Monitor Data

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

Preliminary one-hour ozone averages from all sites in parts per million

Preliminary eight-hour ozone averages from all sites in parts per million

Air Pollutant Design Values - Quarterly Report

Additional information about ground-level ozone and state planning efforts

Table of Symbols - Flags Air Monitoring Data

Technical issues can affect ability to deliver quality data. Access a table of symbols with explanation of the problems they represent.

Ozone preliminary one-hour data from El Dorado Springs