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Colorado Clean Indoor Air Act

The Colorado Clean Indoor Air Act protects you and your family from secondhand tobacco, marijuana, and vape smokes. What does the law cover?

General Smoking and Vaping Restrictions (25-14-204)

  • Public places and buildings including retail and commercial establishments, libraries, theaters, museums, schools, public and private educational institutions, meeting rooms, public meetings, and businesses regardless of the number of employees.
  • Restaurants, bars, hotels, motels, casinos, limited gaming facilities, bingo halls, billiard or pool halls, and bowling alleys.
  • Grocery stores and food service establishments
  • Indoor sports arenas, gymnasiums and auditoriums
  • Lobbies, reception areas, hallways, elevators, restrooms, and public and private common areas.
  • Common areas of assisted living facilities, nursing facilities and assisted living residences.
  • Health care facilities, hospitals, clinics, doctor's offices, and child day care facilities.
  • Any workplace not specifically exempted (see exemptions below).
  • Jury waiting and deliberation rooms, and courtrooms.
  • Public transportation of any kind, including buses, trains, and taxi cabs.
  • The 25-foot entryway radius outside the main or front doorway unless defined differently by local law as of January 1, 2019.

Exemptions (25-14-205)

  • Private homes and automobiles (unless being used for child care or day care)
  • Cigar-tobacco bar and retail tobacco businesses (including those that sell ESDs). No one under 18 is permitted to enter these establishments. Signage stating so is required by October 1, 2019.
  • Licensed marijuana consumption settings. No one under 21 is permitted to enter these establishments.
  • A private, nonresidential building on a farm or ranch that has annual gross income of less than five hundred thousand dollars.
  • Owners or managers of any business not specifically exempted may post signs prohibiting smoking. Such posting will have the effect of including such place in the list of settings where smoking is prohibited.

For more information, please visit or contact your local public health agency.

Your donation supports GASP of Colorado's fight to keep our indoor public places smoke-free.