East Alton, Illinois — City Overview

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Living in East Alton, summers are hot, with Jul highs around 87.3°F, while winters are cold — Feb lows average 24.6°F. Winter heating is a real budget factor — 4291 degree days means 4-5 months of meaningful energy bills. Annual rainfall reaches 55.4 inches, mostly summer thunderstorms. Median household income: $48,313. With a 15.4% poverty rate and 66.0% homeownership, the community reflects a stable residential mix. Air quality is Good — avg AQI 40 over the past week.

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Updated October 01, 2026.

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