EPA Proposes Revisions Air Quality Index Reporting and Significant Harm Level for Particle Pollution
January 15, 2009 -- EPA is seeking comments on a proposal to revise the Agency’s Air Quality Index (AQI) states use to report daily concentrations for fine particle pollution, also known as PM2.5. The proposal also would set a “significant harm level” for PM 2.5, which states use in developing emergency episode plans. EPA will hold a public hearing March 5, 2009 in in the Dallas area.
AIRNow is a government-backed program. Through AIRNow, EPA, NOAA, NPS, news media, tribal, state,
and local agencies work together to report conditions for ozone and particle pollution.
State, Local and Tribal Partners.