Belvidere, Illinois — City Overview

Living in Belvidere, summers are warm, peaking at 83.7°F in Jul, while winters are cold — Jan lows average 15.0°F. At 6220 heating degree days per year, winter energy bills are significant. With 38.9 inches annually, the climate is relatively dry. Median household income: $59,216. With a 14.4% poverty rate and 74.2% homeownership, the community reflects a stable residential mix. Nearby cities: Loves Park (12mi W), Machesney Park (12mi NW), Marengo (12mi E). Air quality is Good — avg AQI 42 over the past week.

View Belvidere city guide

Updated August 31, 2026.

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