Current 8-Hour Ozone Summary
Published: September 27, 2021Ozone Summary through September 26, 2021
8- hour Ozone Summary is based on 8-hour averages of raw 1-hour ozone data from the Colorado Department of Public Health and Environment (CDPHE) through EPA AirNow and consistent with Data Reporting and Handling Conventions outlined in 40 CFR Part 50 – Appendix P.
To view historic ozone summaries click here.