Measures that 'may be introduced' in Portsmouth include vehicles registered before 2006 or diesel vehicles registered before 2015 faced with a charge to enter the city.
Islanders who regularly drive through Portsmouth may wish to take part in this survey calling for views on a possible £8 per day clean air zone charge in the city.
If you're out and about on the roads this month you'll notice roadwork schemes have intensified as Island Roads aims to finish as many schemes as possible before the summer holidays.