How much medical marijuana can you possess in Illinois?
Yes.
Medical marijuana is legal in Illinois. Updated October 2026.
Possession limits
The recorded possession limit for medical marijuana in Illinois is 2.5 oz (71 g).
Yes — medical marijuana is legal in Illinois.
No separate over-limit penalty text is on file; the headline status still applies.
This is a long-tail extract of the main Illinois ruling, published only because a possession figure exists in the dataset.
Frequently asked
Is medical marijuana legal in Illinois?+
Yes — medical marijuana is legal in Illinois.
Is medical marijuana legal everywhere in Illinois?+
The recorded status for Illinois as a whole is legal. Local bylaws can still add conditions.
How much medical marijuana can you possess in Illinois?+
The recorded possession limit is 2.5 oz (71 g).
Can tourists use medical marijuana in Illinois?+
Visitors to Illinois are generally subject to the same medical cannabis rules as residents. Crossing a border with it remains a separate, usually prohibited, act.
Can you grow medical marijuana at home in Illinois?+
Home cultivation is recorded as: medical patients only (5 plants).
When was this Illinois medical marijuana ruling last verified?+
Last verified 2026-10-19.