You should know that all AZ emission testing locations have the same hours, and are open all week excluding Sunday.
All inspection stations are open:
Monday – Saturday 8am – 5pm
Tip: Testing is faster mid-week, mid-month, weekdays from 5-7pm and on Saturday afternoons.
CLOSED: New Year’s Day, Memorial Day, July 4, Labor Day, Thanksgiving, Christmas Eve, and Christmas Day.
You can see a webcam of the location you are considering to help you determine if there is a long wait.