Louisville, Illinois — City Overview

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Living in Louisville, summers are hot, with Jul highs around 87.8°F, while winters are chilly, with Feb lows around 25.3°F. Winter heating is a real budget factor — 4218 degree days means 4-5 months of meaningful energy bills. The area receives 46.1 inches of rainfall per year. Median household income: $39,517. With a 29.9% poverty rate and 62.2% homeownership, the community reflects a stable residential mix. Air quality is Good — avg AQI 43 over the past week.

View Louisville city guide

Updated October 21, 2026.

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