Address: 7536 Southwest O Highway
Trimble, MO 64492
County: Clinton
Date established: Jan. 22, 2004
Pollutant monitored: Ozone (O3)
Site coordinates
* Latitude: 39.53603°
* Longitude: -94.55594°
EPA site ID: 29-049-0001

The Trimble air monitor characterizes ground-level ozone concentrations further downwind of Kansas City. The station determines exposure of a segment of Kansas City area residents and visitor to ground-level ozone.

 

 

 

 

 

The federal ozone season runs from March 1 through October 31.
Ground-level ozone forms 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 as opposed to 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, or 0.070 parts per million. 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.

Weekly summary of preliminary data from all ozone sites
• Eight-hour ozone design values
• Four highest eight-hour ozone values from beginning of ozone season
• Running list of exceedances from beginning of season
• Monthly number of exceedances, 2016 and 2017
• Each site's daily maximum eight-hour average concentration from beginning of season

Preliminary data from Trimble in parts per million
• "P" stands for primary monitor; "S" for secondary monitor.
• Data from 10 days ago through current date
• Central Standard Time

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

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

• Data from 10 days ago through current date
• Central Standard Time

2016 list of exceedances

Graph of ozone design values, using data from Kansas City sites, beginning in 2003

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

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