A set of commercial instruments measuring carbon monoxide (CO), ozone (O3), sulfur dioxide (SO2), and nitrogen oxides [nitric oxide (NO), nitrogen dioxide (NO2), and odd nitrogens (NOX)] was integrated and deployed in a nonurban environment. The deployment occurred between July 2, 2007 and August 7, 2007 in Richland, WA. The mixing ratios of all species were lower than in most ruralsuburban environments, and strong diurnal patterns were observed. NO2 was depleted by photochemically formed ozone during the day and replenished at night as ozone was destroyed. The highest ozone concentration during these episodes was 45 ppb. The overall average was 15 ppb with readings approaching near zero at times. This observation is low compared to average daytime summer readings of 6080 ppb in highly populated and industrialized urban areas in the Pacific Northwest region. Backtrajectory analysis and prevailing weather conditions both indicated that much of the ozone was transported locally or was produced insitu. Analysis of SO2 as a tracer for O3 advection further indicated lack of longrange regional transport of pollutants to Richland. We also present results of analysis of high ozone episodes and comparisons relative to other areas in the Pacific Northwest region. These results provide a useful sample data set to study the historical record of air quality in rural Eastern Washington.