How you affect the air, and it affects you

Simple Science Behind Ground-Level Ozone

Where Ground-Level Ozone Comes from in Colorado

How Ground-Level Ozone Affects Coloradans

Why Car Trips (and making a lot of them) Matter

Instead of driving to the store, post office, or to other errands one at a time, combine your car trips.
This keeps your engine warm - which means your car is creating less pollution for Colorado’s air.

Kids Can Help Colorado’s Air

Earn your Clean Air Cadet badge