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Recreational & medical legal

Cannabis Laws in Illinois

Is weed legal in Illinois? Yes — recreational and medical cannabis are both legal here for adults 21+.

Illinois adults 21+ may buy cannabis from licensed dispensaries. Residents may possess 60 g of flower, 10 g of concentrate and 1,000 mg THC in infused products; nonresidents have half those limits. The categories are cumulative. Registered medical patients may grow up to five plants at home; recreational home cultivation remains prohibited. Adult-use sales began January 2020.

Federally, cannabis is still a controlled substance nationwide — but that status is in flux. See where rescheduling stands →

StatusRecreational & medical legal
Recreational since2020
Medical since2014
Adult-use retailOpen
Possession and purchase limitsResidents: 60 g flower, 10 g concentrate and 1,000 mg THC in infused products. Nonresidents: 30 g flower, 5 g concentrate and 500 mg THC in infused products.
Home growingMedical patients only (up to 5 plants); not permitted for recreational users
Adult-use minimum age21+

Regulated by Illinois Cannabis Regulation Oversight Office.

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Reviewed 2026-11-08. This is general information for adults 21+, not legal advice — cannabis laws change frequently. Confirm current rules with Illinois Cannabis Regulation Oversight Office before acting.