Current 8-Hour Ozone Summary

Ozone Summary through August 24th, 2025 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...

RAQC 2024 End of Ozone Season Media Release

2024 “Ozone Season” Data Highlights the Need For Additional Control Strategies and Immediate Action to Meet Compliance Deadlines and Improve Public Health Media Contact: David Sabados Communications, Programs, and Government Affairs Director, Regional Air Quality...