Tropospheric ozone concentrations for Kansas City are well known on a regional scale. The Kansas City, Missouri, ground-level ozone (GLO) project measured outdoor ozone concentrations using passive sensing devices (PSDs) on a neighborhood scale. Highly resolved exposure maps were made based on the detailed air quality observations collected during the seven week sampling study during the summer of 2005. Data analysis demonstated that ozone concentration levels were higher in urban core neighborhoods compared to the surrounding surbuban areas. The results have negative implications for the respiratory health of residents of urban Kansas City.