EPA Determines Las Vegas Area Failed to Meet 2015 Ozone Standards, to be Reclassified as Serious Nonattainment Area

Summary

The Environmental Protection Agency (EPA) has determined that the Las Vegas, Nevada area failed to meet the 2015 ozone national ambient air quality standards by the applicable attainment date, leading to a reclassification from 'Moderate' to 'Serious' nonattainment starting January 21, 2025.