Atmospheric levels of toxaphene were monitored during the summer and fall of 1981 at four locations: Greenville, MS; St. Louis, MO; Bridgman, MI; Beaver Island, MI. Each collection was conducted by continuously sampling air during the first 2 weeks of the months of August, September, October, and November. The collected toxaphene was analyzed on a capillary equipped electron capture gas chromatograph. The average concentrations over the entire sampling period for each site were 7.0 ng/cu m in Greenville, 1.3 ng/cu m in St. Louis, and 0.29 ng/cu m for Lake Michigan (Bridgman and Beaver Island combined). The trend in relative levels of toxaphene was similar at each site. (Copyright (c) 1986 by the American Chemical Society).