Be sure your vehicle is properly warmed to operating temperature before you’re tested.  “Cold” vehicles emit higher levels of pollution than those at operating temperature. In general, 10-15 minutes of drive time will ensure proper warm-up.

Air Care Colorado

County Motor Vehicle Offices

Please click on a county below. This will display a map with the address, phone number, hours, and website for each of the county's motor vehicle registration offices.

While we attempt to keep these listings current, this information can change without notice, so please call ahead.

Adams

Arapahoe

Boulder

Broomfield

Denver

Douglas

Jefferson

Larimer

Weld

Note: The enhanced emissions program operates in Adams, Arapahoe, Boulder, Broomfield, Denver Douglas, Jefferson, Larimer and Weld counties.