81% of Coloradans Live in Ozone-Polluted Areas, Advocates Push for Change
81% of Coloradans Live in Ozone-Polluted Areas, Advocates Push for Change
US · Published Sep 4, 2026
According to the American Lung Association, 81% of Colorado residents live in areas with unhealthy ozone levels, making air pollution a significant concern across the state.
Denver ranks 8th and Fort Collins 19th among the most ozone-polluted cities in the United States.

Impact & Risks

Ozone pollution poses serious health risks, particularly for individuals with asthma, COPD, or other respiratory conditions. Symptoms include wheezing, coughing, and shortness of breath, with long-term exposure linked to heart attacks, strokes, and impaired cognitive functioning. Vulnerable populations, including children, the elderly, and athletes, are especially affected. Advocates warn that without immediate action, the health and quality of life for Coloradans will continue to deteriorate.

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