The decriminalization of marijuana in Illinois began on June 5th, 2015 with the signature of Governor Bruce Rauner for no more than 10 grams of marijuana to be held as it would be considered a civil law violation punishable for a hundred dollar fine. Dispensaries where allowed to start selling marijuana August 26, 2015.
On Aug 3, 2016; Illinois Gov. Bruce Rauner signed a bill into law decriminalizing marijuana for adults and changing criminal penalties into civil infractions. From June 30th 2016, doctors/physicians are no longer required to explicitly recommend Marijuana therapy. Instead, they are required to certify that there exists a bona fide doctor-patient relationship and that the patient possesses a qualifying, debilitating medical condition due to which the patient has to consume the required quantity as per the doctor’s advice.
Illinois has not legalized marijuana. Possession of small amounts of marijuana under 10 grams were decriminalized in August 2016. You can still be fined up to $200 for possession of small amounts of marijuana. Illinois is also creating a medical marijuana pilot program set to last a minimum of four years. Possession of larger amounts of marijuana can lead to significant jail time and large fines.