Use alternate means of transportation. You don't have to live in New York City to take public transportation to get from one place to the next. Wherever you live, look into a subway, bus, or train system that will take you were you want to go. Start replacing your car commute with public transportation as often as possible. You'll save money while you do your part to reduce air pollution.[1]
Biking is another great way to get around without polluting the air at all. Look into your town's bike lane system. And plan out routes you can take to work and school.
Don't overlook the power of walking, either. While you might not be able to walk everywhere you want to go, you'd be surprised how many places are within walking distance. If a place is within a five minute drive from your house, you can probably walk there. You'll just need to plan to spend more time getting where you need to go.