On Thursday 22nd June, there is an emergency air quality scheme in Paris.
Vehicles must be at least Crit'Air 0 to 3 to move in Paris, within the A86 (super-périphérique).
There is a "daily anti-pollution package" public transport ticket, costing € 3.80 for 22 June. It allows the use of all public transport in Paris.
There are also:
free Vélib 'services
free residential parking (the parking permit is extended by the number of days of the alert) and
under certain conditions, free Autolib'.
Paris asks people to:
Delay travelling into central Paris,
To use carpooling, cycling, walking and public transport
And avoid using solvent-based products
On Wednesday 21st June and Thursday 22nd June:
the speed limit reduces to 20 km / h
vehicles >3.5 tonnes should to avoid Paris.
The restriction finished at midnight of the 22nd June.
More information from our Paris full page, or directly from the Paris authorities the alert (in French).