Just so, can I buy a crit air sticker in France?
Non-French motorists can already order the Crit'Air sticker at air. (External link) (page available in both English and French). It will arrive within five working days and must be displayed inside the vehicle windscreen.
Secondly, where in France do I need an emissions sticker? While technically you can drive a vehicle without an emissions sticker through the restricted zones when the restrictions aren't in force, the RAC strongly recommends that if you're planning to drive in Paris, Lille, Lyon or Grenoble, and you qualify for a vignette, you get one and display it at all times.
Just so, how long does it take to get a crit air sticker?
30 days
Which cities in France require an air quality certificate?
Introduced initially in the cities of Paris, Lyon, Toulouse, Villeurbanne and Grenoble, where within designated 'environmental zones' you need to display a window sticker (vignette). It is also in the process of being introduced in many other major cities of France.