On Saturday at 6:33 p.m. the National Weather Service issued a freezing fog advisory in effect until Sunday at noon for Foothills of the Northern Blue Mountains of Oregon.

The weather service says to expect, "For the Freezing Fog Advisory Foothills of the Blues through Meacham, visibility one quarter mile or less in freezing fog. For the Air Stagnation Advisory, poor air quality will continue. This is due to an inversion and stagnant air conditions near the surface that will continue to trap pollutants."

News Source : https://www.oregonlive.com/weather-alerts/2026/01/freezing-fog-advisory-active-for-foothills-of-the-northern-blue-mountains-of-oregon-until-sunday-mid.html