During the mid-part of the last decade, when the population growth rate was at its highest, the Phoenix area experienced rapid development and urban sprawl. The result has been an intensification of the Urban Heat Island effect. In this edition of Decades, author Sally Wittlinger discusses this uncomfortable consequence of urbanization.

In a desert city such as Phoenix, summertime heat is a way of life, but how much does the built environment contribute to the intensity of the heat on a summer night? In urbanized Phoenix, nights don’t cool down as much as in the surrounding rural areas and on more and more summer nights, the official Phoenix temperature fails to drop below 90 degrees. Climate plays a huge role in the comfort and quality of life of residents, with numerous implications for tourism, energy demand, water use, and the vulnerability of low-income families.

This study summarizes and analyzes the findings of a statewide survey conducted last year of samples of homeless individuals in the Phoenix and Tucson areas and across the state. The aim of this report is to join with other, ongoing efforts to develop effective policies concerning such issues as job training, treatment for the mentally ill and Arizona’s critical need for affordable housing. Hopefully, it will help politicians and policymakers talk more openly and productively about a pervasive social problem that is both glaringly obvious and largely invisible.

This report brings together the results of a survey of 1100 homeless people living in and around downtown Phoenix in 1996 with the results of a similar survey conducted in 1983. In addition to providing a snapshot of the homeless population in Phoenix, the data and comparative information presented in this report also reveal the complex and intractable nature of the homeless problem in general.