Effective May 2024, EPA tightened the annual health-based National Ambient Air Quality Standard (NAAQS) for fine particulate matter (PM2.5) from 12.0 µg/m3 to 9.0 µg/m3. This change was made after a review of the available...more
4/9/2025
/ Air Pollution ,
Air Quality Standards ,
Clean Air Act ,
Department of Environmental Management ,
Environmental Policies ,
Environmental Protection Agency (EPA) ,
NAAQS ,
Public Comment ,
Regulatory Requirements ,
Rulemaking Process ,
State Agencies