Report Illegal Smoke or Air Emissions - Montréal Bylaw

Environmental Protection Quebec 3 Minutes Read · published February 11, 2026 Flag of Quebec

In Montréal, Quebec, residents who see illegal smoke or excess air emissions can report incidents to municipal bylaw enforcement for investigation. This guide explains how and where to report, what information to gather, how the city enforces rules, and what to expect during inspection and follow-up. Use the official online reporting options or 311 for urgent hazards. For rules and the controlling municipal instruments, consult the city bylaws and the bylaw enforcement division linked below.[1][2]

Penalties & Enforcement

Who enforces: By-law Enforcement, City of Montréal (municipal inspectors) handle complaints about smoke, odours and air nuisances. For immediate hazards or fire risk, contact emergency services first and use 311 or the city reporting form for non-emergencies.[1]

Fine amounts: not specified on the cited page.[2]

Escalation and repeat offences: not specified on the cited page; in practice the city issues orders before or alongside fines and may take escalating measures for continuing non-compliance.[2]

Non-monetary sanctions and remedies commonly used by municipalities include orders to cease the activity, remediation orders, seizure of equipment where authorized, and referral to municipal court for prosecution; specific measures for Montréal are detailed in the controlling bylaws and enforcement policy where published.[2]

Appeal and review routes: procedures and time limits for contesting a ticket or appealing an order are set out in municipal procedure or the municipal court rules; specific deadlines are not specified on the cited page.[2]

Applications & Forms

How to file: use the City of Montréal online reporting portal or call 311 to file a complaint. The city accepts complaints with location, description, dates/times, and photos or video if available. No specific named form number is published on the city reporting page for smoke complaints.[1]

  • Report method: Online reporting portal or 311 for non-emergencies.[1]
  • Evidence: Date, time, address, photos or video and witness names when possible.
  • Inspection: Inspectors may visit the site to confirm sources and measure nuisances where authorized.
  • Penalties: Not specified on the cited municipal summary page; consult the full bylaw text for fine schedules.[2]
Keep a dated record and photos to support complaints.

Common Violations

  • Open burning that creates persistent smoke or odours affecting neighbours.
  • Industrial or commercial emissions exceeding local limits or creating visible plumes.
  • Use of prohibited materials in outdoor fires (treated wood, rubber, waste).
If you believe emissions pose health or safety risks, call emergency services before filing a non-emergency report.

FAQ

How do I report illegal smoke or odours?
File a complaint through the City of Montréal online reporting portal or call 311 with the location, times, and evidence. Complaints are handled by bylaw enforcement.[1]
What information should I provide?
Provide the address or nearest intersection, dates and times of occurrences, description of the smoke or odour, photos or video, and any witness names.
Will the city tell me the outcome?
The city typically records the complaint and may follow up; specific disclosure or timelines for outcomes are not specified on the summary reporting page.[1]

How-To

  1. Document the incident: note date, time, location and capture photos or video where safe.
  2. Check for immediate danger; if there is fire or an acute hazard call 911 first.
  3. Use the City of Montréal online reporting portal or call 311 to submit details and attach evidence.[1]
  4. Keep copies of your submission confirmation and any correspondence from inspectors.
  5. If you receive an order or ticket, follow instructions and note appeal deadlines; consult the bylaw text for appeal procedures.[2]

Key Takeaways

  • Report smoke via the city portal or 311 promptly.
  • Gather time-stamped evidence to support enforcement action.

Help and Support / Resources


  1. [1] City of Montréal — Report a problem (311 / online reporting)
  2. [2] City of Montréal — Bylaws and regulations