Objectives. This study assessed mortality associated with the mid-July
1995 heat wave in Chicago. Methods. Analyses focused on heat-related
deaths, as designated by the medical examiner, and on the number of ex
cess deaths. Results. In July 1995, there were 514 heat-related deaths
and 696 excess deaths. People 65 years of age or older were overrepre
sented and Hispanic people underrepresented. During the most intense h
eat (July 14 through 20), there were 485 heat-related deaths and 739 e
xcess deaths. Conclusions. The methods used here provide insight into
the great impact of the Chicago heat wave on selected populations, but
the lack of methodological standards makes comparisons across geograp
hical areas problematic.