Ozone information

Ozone and your health 
Information about ground-level ozone, how it affects your health, how you can become more aware, and what you can do to help lower local ozone levels

Ozone planning information for industry 
Stay updated on the division’s ozone planning and how Colorado’s nonattainment designation may affect your industry

History of ozone in Colorado 
Information on the history of ozone levels in Colorado, federal ozone standards, and regulatory development related to ozone attainment 

See current air quality data

Send questions and comments to cdphe.commentsapcd@state.co.us