Cannabis Is Legal in Illinois — But You Can Still Be Arrested
Since January 1, 2020, recreational cannabis has been legal in Illinois for adults 21 and over. But legalization did not eliminate marijuana-related criminal charges — it changed where the legal lines are drawn. Possessing more than the legal limit, possessing cannabis under the age of 21, selling without a license, growing without authorization, and possessing cannabis in prohibited locations are all still criminal offenses that can result in arrest, jail time, and a permanent record in Joliet.
At the Law Offices of Jack L. Zaremba, P.C., we defend clients facing marijuana and cannabis-related charges throughout Joliet, Will County, and Grundy County. Attorney Jack Zaremba is a former Will County prosecutor who understands the evolving cannabis laws in Illinois and how prosecutors are applying them in Will County courts. Whether you are facing a misdemeanor for exceeding the possession limit or a felony for large-quantity possession, we provide experienced, aggressive defense.
What Is Legal — Illinois Cannabis Possession Limits
Under the Cannabis Regulation and Tax Act (410 ILCS 705), Illinois residents 21 and older may legally possess:
- 30 grams of cannabis flower (approximately 1 ounce)
- 5 grams of cannabis concentrate
- 500 milligrams of THC in cannabis-infused products (edibles)
Non-residents visiting Illinois may possess half these amounts: 15 grams of flower, 2.5 grams of concentrate, and 250 milligrams of THC in infused products.
Important restrictions that still apply:
- Cannabis may not be consumed in any public place, including parks, sidewalks, and government buildings
- Cannabis may not be possessed on a school bus, school grounds, or in a school zone
- Cannabis must be stored in a sealed, child-resistant container in vehicles and may not be used by a driver or passenger
- Cannabis may not be possessed on federal property, including military installations and federal buildings
- Persons under 21 may not possess any amount of cannabis
Penalties for Marijuana Possession Over the Legal Limit
Exceeding the legal possession limit in Illinois is a criminal offense under the Cannabis Control Act (720 ILCS 550/4). The penalties escalate with the quantity possessed:
30 to 100 grams — Class A misdemeanor: Up to 364 days in jail and fines up to $2,500. This is the most common over-limit charge in Joliet for recreational users who possess more than the legal 30-gram limit.
100 to 500 grams — Class 4 felony: 1 to 3 years in prison and fines up to $25,000. Probation may be available for first-time offenders.
500 to 2,000 grams — Class 3 felony: 2 to 5 years in prison and fines up to $25,000.
2,000 to 5,000 grams — Class 2 felony: 3 to 7 years in prison and fines up to $25,000.
Over 5,000 grams — Class 1 felony: 4 to 15 years in prison and fines up to $25,000.
Joliet police and Will County prosecutors continue to aggressively pursue cases involving quantities above the legal limit, particularly when there is evidence suggesting distribution.
Underage Cannabis Possession
Cannabis possession by anyone under 21 remains illegal in Illinois regardless of the amount. The penalties for underage possession include:
- Civil penalty for small amounts — fine up to $200 for a first offense
- Class A or B misdemeanor for larger amounts — jail time possible
- Driver’s license suspension or revocation — the Secretary of State can suspend or revoke driving privileges for underage cannabis violations
- Use of a fake ID to purchase cannabis is a Class A misdemeanor
For minors under 18, cannabis possession is handled through the juvenile delinquency system in Will County. Parents should take these charges seriously — even a juvenile disposition can affect college applications and future opportunities.
Drug Paraphernalia Charges
The Drug Paraphernalia Control Act (720 ILCS 600) makes it illegal to possess, sell, or deliver drug paraphernalia — items used to grow, process, store, or consume controlled substances. Despite cannabis legalization, paraphernalia charges can still arise in several situations in Joliet:
- Possession of paraphernalia by a person under 21
- Possession of paraphernalia in connection with other controlled substances (cocaine, heroin, methamphetamine)
- Delivery or sale of drug paraphernalia — a Class 4 felony carrying 1 to 3 years in prison
- Delivery of paraphernalia to a minor — enhanced penalties
Possession of drug paraphernalia is typically a Class A misdemeanor for a first offense, carrying up to 364 days in jail and fines up to $2,500.
Cannabis DUI in Illinois
Even though recreational cannabis is legal, driving under the influence of cannabis is illegal under 625 ILCS 5/11-501. You can be charged with DUI if your THC concentration is 5 nanograms per milliliter or higher in your blood, or if you are impaired by cannabis to a degree that renders safe driving impossible. Cannabis DUI carries the same penalties as alcohol DUI — a Class A misdemeanor for a first offense, with enhanced penalties for subsequent offenses.
For more information about cannabis-related DUI defense, see our Marijuana DUI Defense page.
Expungement of Prior Cannabis Convictions
The Cannabis Regulation and Tax Act includes provisions for the automatic expungement of certain prior cannabis convictions. If you were convicted of possessing 30 grams or less of cannabis — conduct that is now legal — you may be eligible to have that conviction expunged from your record. The Illinois State Police and the Prisoner Review Board are responsible for processing these expungements.
If you have a prior cannabis conviction that qualifies for expungement but has not yet been processed, Attorney Zaremba can help you petition the court to clear your record.
Defense Strategies for Cannabis Charges
As a former Will County prosecutor, Attorney Zaremba applies proven defense strategies to marijuana and cannabis cases:
- Challenging the weight or quantity — The difference between 30 grams (legal) and 31 grams (criminal) determines whether you are charged at all. We challenge how the cannabis was weighed and whether the weight included packaging, stems, or other non-usable material.
- Illegal search and seizure — Since cannabis legalization, the smell of marijuana alone is no longer sufficient probable cause for a vehicle search in many circumstances under recent Illinois case law. If police searched your vehicle based solely on the odor of cannabis, the evidence may be suppressed.
- Challenging constructive possession — If cannabis was found in a shared vehicle, shared residence, or common area, we challenge whether you had knowledge of and control over the substance.
- Challenging intent to deliver — For larger quantities, prosecutors may allege intent to distribute. We challenge the evidence of intent and argue that the quantity was for personal use.
- Age verification issues — For underage possession charges, we examine whether proper identification was verified and whether the circumstances support the charge.
Frequently Asked Questions About Marijuana Charges in Joliet
Is it still illegal to possess marijuana in Illinois?
It depends on the amount and your age. Adults 21 and over can legally possess up to 30 grams of cannabis flower, 5 grams of concentrate, and 500mg of THC in infused products. Possessing more than these limits, possessing cannabis under age 21, and possessing cannabis in prohibited locations are all still criminal offenses.
Can police search my car if they smell marijuana in Illinois?
This area of law is evolving. Recent Illinois court decisions have held that the odor of cannabis alone may no longer provide probable cause for a vehicle search, since legal possession is now common. However, police may still conduct a search based on other factors combined with the odor. An experienced defense attorney can challenge vehicle searches based on cannabis odor.
Can I grow marijuana at home in Illinois?
Only registered medical cannabis patients may grow up to 5 plants at home. Non-medical adults who grow fewer than 5 plants face a civil violation with a fine up to $200. Growing 5 or more plants without a medical cannabis card is a felony offense with penalties increasing based on the number of plants.
Can a prior marijuana conviction be expunged in Illinois?
Yes. The Cannabis Regulation and Tax Act provides for automatic expungement of certain prior cannabis convictions involving 30 grams or less — conduct that is now legal. If your prior conviction has not been automatically processed, you can petition the court to expedite the expungement.
Related: Return to Drug Crimes Defense for an overview of all related practice areas and defense strategies.
Contact a Joliet Marijuana Defense Attorney
If you are facing marijuana possession, paraphernalia, or cannabis-related charges in Joliet, Will County, or Grundy County, do not assume the charges are minor. Contact the Law Offices of Jack L. Zaremba, P.C. at 815-740-4025 for a free consultation. We are available 24 hours a day and handle cannabis cases throughout Will County.