Address: 251 S.W. Outer Road South
                Branson, MO 65616
County: Taney
Pollutant monitored: ground-level ozone (O3)
Date established: April 1, 2010
Site Coordinates
*Latitude: 36.707727°
   *Longitude: -93.222000°
EPA Site No.: 29-213-0004

The station monitors attainment of the ambient air quality standards and helps determine exposure of a population segment to ground-level ozone in the Branson micropolitan statistical area. According to the U.S. Census Bureau, Branson's population as of 2014 was 11,340, which qualifies the area as a micropolitan area. During warmer months of the year, though, the number of people increases considerably because of tourism. With more people come more vehicles, which can increase production of ground-level ozone.

Ozone (O3) Data*

Ground-level ozone develops when pollutants emitted by cars, factories, power plants and other sources react chemically in the presence of heat and sunlight. Ozone at ground level
is a harmful air pollutant unlike ozone in the upper atmosphere, which protects us from ultraviolet light.

As of 2015, the federal standard for ground-level ozone is 70 parts per billion, which equals 0.070 parts per million
(ppm). An area is in compliance if the design value is at or below this standard. A design value for ozone incorporates
data from three years. The department and EPA calculate the design value by 1) ranking the daily eight-hour ozone
values for three consecutive years; 2) extracting the fourth-highest value for each year; and 3) averaging the three figures.

The ozone season runs from March 1 through October 31.

Weekly summary of preliminary data from all ozone sites

Preliminary one-hour averages from Branson
  • Ozone data in third and fourth columns
     — "P" stands for primary monitor. "S" stands for secondary monitor.
  • Data from 10 days ago through current date
  • Central Standard Time
  • Concentrations of pollutant in parts per million (ppm)

Preliminary eight-hour forward rolling averages from all ozone sites
  • Hourly data equal the average of that hour and the following seven hours.
  • Data from 10 days ago through current date
  • Central Standard Time
  • Concentrations of ozone in parts per million (ppm)

Preliminary one-hour ozone averages from all sites

  • Data from 10 days ago through current date
  • Central Standard Time
  • Concentration of ozone in parts per million (ppm)

Graph of design values for ozone sites in outstate areas, beginning in 2003

2016 exceedances of ozone standard

* Technical issues can affect ability to deliver quality data.
Access a table of symbols indicating technical issues.

Related Links

Missouri's mapped network of air monitoring sites

The 2010 Air Monitoring Network Plan discusses establishment of the Branson air monitor on pages 7-11.

National standard for pollutants

Additional information about ground-level ozone

Real-time views from cameras in Kansas City and St. Louis

Daily Air Quality Forecast (AirNow) shows how current readings
at air monitoring sites rate on the EPA's Air Quality Index.
Click on Missouri in the state box at the top of the home page
to access information.

EPA's Air Sensor Toolbox for Citizen Scientists