Dundas, Illinois — City Overview

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Living in Dundas, summers are hot, with Jul highs around 87.1°F, while winters are chilly, with Feb lows around 25.6°F. Winter heating is a real budget factor — 4276 degree days means 4-5 months of meaningful energy bills. The area receives 46.4 inches of rainfall per year. Median household income: $120,104. Nearby cities: Olney (7mi S), Newton (12mi NW), Robinson (22mi NE). Air quality is Good — avg AQI 36 over the past week.

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Updated October 01, 2026.

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