Possession of Cannabis is explained in Section 720 ILCS 550/4 as follows:
It is unlawful for any person knowingly to possess cannabis. Any person who violates this section with respect to:
(a) not more than 2.5 grams of any substance
containing cannabis is guilty of a
Class C misdemeanor;
(b) more than 2.5 grams but not more than 10 grams of
any substance containing cannabis is guilty of a Class B misdemeanor;
(c) more than 10 grams but not more than 30 grams of
any substance containing cannabis is guilty of a Class A misdemeanor; provided, that if any offense under this subsection (c) is a subsequent offense, the offender shall be guilty of a
Class 4 felony;
(d) more than 30 grams but not more than 500 grams of any substance containing cannabis is guilty of a Class 4 felony; provided that if any offense under this subsection (d) is a subsequent offense, the offender shall be guilty of a Class 3 felony;
(e) more than 500 grams but not more than 2,000 grams
of any substance containing cannabis is guilty of a Class 3 felony;
(f) more than 2,000 grams but not more than 5,000 grams of any substance containing cannabis is guilty of a Class 2 felony;
(g) more than 5,000 grams of any substance containing cannabis is guilty of a Class 1 felony.
The manufacture and/or delivery of Cannabis is explained in Section 720 ILCS 550/5) as follows:
It is unlawful for any person knowingly to manufacture, deliver, or possess with intent to deliver, or manufacture, cannabis. Any person who violates this section with respect to:
(a) not more than 2.5 grams of any substance containing cannabis is guilty of a Class B misdemeanor;
(b) more than 2.5 grams but not more than 10 grams of any substance containing cannabis is guilty of a Class A misdemeanor;
(c) more than 10 grams but not more than 30 grams of any substance containing cannabis is guilty of a Class 4 felony;
(d) more than 30 grams but not more than 500 grams of any substance containing cannabis is guilty of a Class 3 felony for which a fine not to exceed $50,000 may be imposed;
(e) more than 500 grams but not more than 2,000 grams of any substance containing cannabis is guilty of a Class 2 felony for which a fine not to exceed $100,000 may be imposed;
(f) more than 2,000 grams but not more than 5,000 grams of any substance containing cannabis is guilty of a Class 1 felony for which a fine not to exceed $150,000 may be imposed;
(g) more than 5,000 grams of any substance containing cannabis is guilty of a Class X felony for which a fine not to exceed $200,000 may be imposed.