Ozone Information

Just a heads up that if you're looking for ozone air data for the Denver metro area, the Air Pollution Control Division maintains a spreadsheet of ozone readings. While the yellow highlights mean a violation occurred, it's important to point out that any value of 0.080 technically exceeds ambient air quality standards and does threaten human health. Due to an outdated rounding method, the state only counts readings of 0.085 or higher as violations.