Drive by the testing vans on several occasions. Since there are several variables that may contribute to an invalid reading, and because your vehicle must record two clean readings to pass RapidScreen, it’s a good idea to drive by the testing vans several times in the months prior to your registration renewal.

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.