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Naperville, IL Public Conduct: Public Marijuana Use (2026)

Significant Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Possession limit
30 grams or less, if unauthorized
Paraphernalia fine
$750–$1,000 mandatory minimum
Possession fine
$100–$500 general penalty
Authorization exception
Legal under state Cannabis Regulation Act

Summary

Naperville makes it a municipal offense to possess cannabis without state authorization or to possess any drug paraphernalia, giving police a local ticket to use against public cannabis activity.

A person commits the offense of unlawful possession of cannabis by knowingly possessing thirty (30) grams or less of any substance containing cannabis unless permitted or authorized to do so pursuant to the Cannabis Control Act (720 ILCS 550/1 et seq.), the Cannabis Regulation and Tax Act (410 ILCS 705/1 et seq.) or the Compassionate Use of Medical Cannabis Program (410 ILCS 130/1 et seq.), as amended, respectively.3.Unlawful Possession Of Drug Paraphernalia: A person commits the offense of unlawful possession of drug paraphernalia by knowingly possessing drug paraphernalia unless permitted or authorized to do so pursuant to the Drug Paraphernalia Control Act (720 ILCS 600/1 et seq.), the Cannabis Regulation and Tax Act (410 ILCS 705/1 et seq.), or the Compassionate Use of Medical Cannabis Program (410 ILCS 130/1 et seq.), as amended, respectively.3.1.A person who knowingly possesses an item of drug paraphernalia in violation of this Section is guilty of the offense hereunder for which the court shall impose a minimum fine of seven hundred fifty dollars ($750.00), but not more than one thousand dollars ($1,000.00).3.2.In determining intent under Section 10-2-3-1:3, the proximity of the drug paraphernalia or the presence of cannabis on the drug paraphernalia may be considered. (Ord. No. 95-172, 8-15-1995; Ord. No. 97-144, 9-2-1997; Ord. No. 19-025, § 1, 2-19-2019; Ord. No. 19-148, § 2, 11-19-2019)

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 101).

Full Breakdown

Under Section 10-2-3-1, knowingly possessing 30 grams or less of cannabis is a municipal offense unless the person is permitted under the Cannabis Control Act, the Cannabis Regulation and Tax Act, or the Compassionate Use of Medical Cannabis Program, meaning unauthorized possession, including in public, is locally citable. Possessing any drug paraphernalia is separately unlawful regardless of authorization, carrying a mandatory minimum fine of $750 up to $1,000. The Code sets no distinct dollar penalty for the possession offense itself, so it falls under the Code's general $100–$500 penalty. This is Naperville's local enforcement tool alongside the State's own ban on cannabis use in public places.

Violations & Fines

Paraphernalia possession: mandatory $750–$1,000 fine; unauthorized cannabis possession: $100–$500 general penalty per offense.

Frequently Asked Questions

Can you get a ticket for marijuana paraphernalia in public in Naperville?
Yes: possessing drug paraphernalia is a separate local offense with a mandatory fine of $750 to $1,000, regardless of the cannabis amount involved.
Is smoking marijuana in public illegal in Naperville?
State law already bans cannabis use in public places; locally, Naperville enforces unauthorized possession under Section 10-2-3-1, with fines starting at $100.

Sources & Official References

Other rules in Naperville

All Naperville rules

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