Not much change from yesterday - more smoke coming tomorrow

Smoke impacts today are expected to be greatest over the Idaho/Washington border from Lewiston north to the Canadian border and east to the Montana border due to regional smoke transport, especially within the Purcell Trench from the Washington/Idaho border and north into Boundary County. The eastern Central Idaho Mountains are also expected to be impacted at the surface in the morning. Due to light transport winds, smoke will again settle into the area at night, draining into the Treasure Valley, Upper and Middle Snake River Plain, and within the Spokane-Coeur d’Alene corridor. Widespread haze, particularly over southern Idaho, the Central Idaho Mountains, and the Panhandle, is expected today – again. Tomorrow, winds will shift to be from the south, which will allow for smoke to come into Idaho from fires in California and Oregon in a pattern similar to last week.  

This image shows the widespread, moderate-level impacts across eastern Washington and Oregon, northern Idaho, and western Idaho with good readings in eastern Idaho.

AirNow current Air quality readings for PM2.5. Data Source: AirNow