Air Quality Alert issued for Snohomish County starting Monday night

Smoke from wildfires darkens the sun in B.C.'s Okanagan region on Sunday

Smoke from wildfires darkens the sun in B.C.'s Okanagan region on Sunday

Wildfire smoke from British Columbia creating haze across Western Washington August 13, 2018.

The Oregon Department of Environmental Quality on Tuesday issued several air quality advisories.

Over the course of the next couple of days, air quality from the Crowsnest Pass, east to the Taber area, south to the US border and north to the Calgary area, is expected to drastically deteriorate.

Temperatures will stay in the 80s until Thursday, when they dip into the upper 70s.

Unhealthy: People with respiratory or heart disease, the elderly, and children should avoid any outdoor activity; everyone else should avoid prolonged exertion.

But air quality may diminish again on Sunday when the onshore flow will be cut off, according to Allard.

Smoky conditions have become so prevalent during wildfire season in the Northwest, there is even a blog dedicated to it.

On Friday, for example, a magenta frowning face warned about hazardous conditions in Eagle Point, where the Air Quality Index reached 340.

Others have downloaded a new companion mobile app that quickly shows whether the air you're breathing is safe.

The bad air was just the latest in a long summer of poor air quality for southwest Oregon.

The Puget Sound Clean Air Agency does forecast air quality levels to return to GOOD to MODERATE by Wednesday and beyond. If you have an air conditioner, use the "recirculation" switch. We are over the trigger for calling a burn ban in the winter.

Kenworthy says people should be prepared for smoky conditions for a couple months. "We are expecting the smoke we're seeing right now in Western Washington to start to move out (Tuesday night) into (Wednesday)".

It's the latest effect of yet another year of devastating wildfires.

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