Emissions testing hours in Arizona are as follows: Monday through Friday from 8:00 a.m. until 7:00 p.m. and Saturday from 8:00 a.m. until 5:00 p.m.   The best times to get your emissions tested (when the lines are the shortest) are Monday through Friday from 5:00 p.m. until 7:00 p.m. and Saturday from 2:00 p.m. until 5:00 p.m.

The emissions testing facilities are closed on Memorial Day, the Fourth of July, Labor Day, Thanksgiving Day, Christmas Eve and Christmas Day, and New Year’s Day.