Skip to content
Alaska DEC Office Closure

DEC offices will be closed Friday, May 24 for a mandatory furlough day. Should you need assistance on this day, please call the mainline of the respective office location. Offices will reopen Tuesday, May 28.

Fairbanks Particulate Matter PM2.5

Fairbanks inversion

A portion of the Fairbanks North Star Borough, including the City of Fairbanks and the City of North Pole, was designated as a PM2.5 Nonattainment Area in December 2009. These areas exceed the health based 24 hour PM2.5 National Ambient Air Quality Standard (NAAQS) of 35 micrograms/cubic meter.

Analysis shows that local emissions from wood stoves, burning distillate oil, industrial sources, and mobile emissions contribute to particulate pollution. For planning purposes, PM2.5 is primarily a concern during the winter months (October through March) when extremely strong temperature inversions are frequent and human-caused air pollution impacts increase. Summertime wildland fire smoke is also a health concern, but is considered natural and uncontrollable.