From Monday the 23rd January 2017, Paris is tightening the low emission zone due to high pollution. This is lasting until at least Wednesday the 25th January 2017. For updates, please see this page.
Vehicles are banned that do not have the French LEZ sticker (a ‘Crit'Air’ Vignette), and those with a category 5 Sticker. This means cars registered before 1997 for petrol, and before 2001 for diesel.
This will be the first time that such a measure has been taken in Ile-de-France. Given the pollution situation this winter, it is likely to continue.
There is free public transport, residential parking, subscription to Vélib' day and 1 hour of Autolib' (low emission car hire). There is also free residential parking for Monday to encourage the use of public transport (a weekly subscription to residential parking is extended by the number of free (pollution) days announced).
The City of Paris calls on all those in Paris to adapt their behaviour. Drivers should take public transport, carpool or use low-emission vehicles (electric, LNG, etc.).