Monday, September 15 -- High pressure is building over the region and ventilation is weakening. Air quality will probably reach the MODERATE range of the Air Quality Index for PM2.5 on Tuesday.
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.