Extreme Heat Warning
until FRI 12:00 AM CDT, McHenry County, Lake County, Kendall County, Kane County, Central Cook County, DeKalb County, Northern Cook County, Southern Will County, Southern Cook County, Grundy County, La Salle County, Kankakee County, Northern Will County, Eastern Will County, DuPage County, Newton County, Lake County, Jasper County, Porter County
