Is there a set amount of prison time for assault in Illinois and how much time is it?

Assault is a Class C Misdemeanor and can receive up to 30 days jail time, or up to two years probation and/or a fine of up to $1,500. Aggravated Assault can be Class A Misdemeanor (up to a year) or a Class 4 Felony (up to 3 year with extension up to 6) depending upon circumstances.