Mark Graves/The Oregonian/Oregonlive

Portland easily broke the record for number of 90+ degree days in a calendar year on Wednesday when temps at the airport reached 93 degrees under smoke-filled skies.

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AirNow.gov

That smoke was supposed to move out overnight, but early morning reports had much of the Portland area under "unhealthy" air levels as of 4 a.m. Thursday will continue with the widespread haze until about noon which is when the Oregon Department of Environmental Quality has adjusted its estimate for when the smoke will clear out. We'll also see clouds (just regular ones, not smoke-filled ones) part of the day and then gradual clearing.

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AirNow.gov

Regional air quality

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DEQ

A nice strong onshore flow will bring in cooler marine air and some clouds and the high will be about 77 on Thursday with afternoon clearing. Those clouds will move back in by Thursday night and lows overnight will finally dip down below 60. Many areas will see lows in the mid-50s overnight.

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The main part of a new system moving in Thursday night and into Friday will bring the chance for drizzle along the coast and possibly the northern parts of Vancouver and Ridgefield. Those chances for drizzle dwindle after about 11 a.m. Most of Friday will be cloudy and the highs will struggle to reach 72 degrees.

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Rosemarie Stein/The Oregonian/Oregonlive

As the weekend approaches, anyone needing to get some outdoor chores done (after hiding from the smoke for so many days) will find cool high temps in the low 70s for Saturday and Sunday and slight possibilities for light showers, especially on Sunday.

Long-term forecast models are seeing most of the showers moving out early next week and temperatures returning to more seasonal averages - in the low 80s.

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Pattern switch setting up with a series of upper-level troughs possibly impacting the northwest next week. Below normal temps and above normal precip is favored during the 6-10 and 8-14 day periods. Posted by US National Weather Service Pendleton Oregon on Wednesday, August 22, 2018