Carol Stream, Illinois — City Overview

Living in Carol Stream, summers are warm, peaking at 83.5°F in Jul, while winters are cold — Feb lows average 17.2°F. Winter heating is a real budget factor — 5941 degree days means 4-5 months of meaningful energy bills. The area receives 44.6 inches of rainfall per year. Median household income: $103,525. With a 7.8% poverty rate and 67.6% homeownership, the community reflects a stable residential mix. Air quality is Moderate — avg AQI 54 over the past week.

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Updated September 03, 2026.

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