Cairo, Illinois — City Overview

Living in Cairo, summers are hot, with Jul highs around 89.0°F, while winters are chilly, with Feb lows around 31.0°F. With 3421 heating degree days annually, heating costs are moderate. The area receives 50.3 inches of rainfall per year. Median household income: $31,429. With a 23.5% poverty rate and 65.5% homeownership, the community reflects a stable residential mix. Air quality is Good — avg AQI 49 over the past week.

View Cairo city guide

Updated September 03, 2026.

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