Illinois Weather Forecasts

441 cities and towns across Illinois’s 102 counties, each with a seven-day forecast, an hourly breakdown, live radar and whatever the National Weather Service has out over it right now. Statewide population 12,549,689.

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Largest cities in Illinois

Chicago weatherCook County · 2,664,452 people
Aurora weatherKane County · 177,563 people
Joliet weatherWill County · 150,489 people
Naperville weatherDuPage County · 150,245 people
Rockford weatherWinnebago County · 146,120 people
Elgin weatherKane County · 113,310 people
Springfield weatherSangamon County · 112,544 people
Peoria weatherPeoria County · 110,460 people
Champaign weatherChampaign County · 89,189 people
Waukegan weatherLake County · 87,642 people
Cicero weatherCook County · 81,004 people
Bloomington weatherMcLean County · 78,587 people

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Largest cities in Illinois

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