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Overview of Ground-Level Ozone in Colorado

Natural Resources & Environment
Public Health

This memorandum focuses on ground-level ozone, the harmful air pollutant that is the main ingredient of “smog.” Ground-level ozone significantly impacts the health of Coloradans and the environment. It is also important to note that ground-level ozone differs from “good” ozone, or stratospheric ozone, which occurs naturally in the upper atmosphere and forms a protective layer that shields the earth from the sun's harmful ultraviolet rays.

The effective date for bills enacted without a safety clause is August 7, 2024, if the General Assembly adjourns sine die on May 8, 2024, unless otherwise specified. Details