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Western Washington forecast

Wildfire smoke with hazy sunshine and moderate air quality in the next few days. Smoke haze decreases along with our temperatures as we head into the weekend.

PUGET SOUND FORECAST:

Sunny today with hazy sunshine. Mostly moderate air quality today.  Highs in the mid to upper 70s. Southerly wind 5-10 mph.

DISCUSSION:

A large ridge of high pressure will continue to dominate our weather all week for mostly sunny skies. Temperatures will remain above normal through the weekend but gradually cool over the weekend into next week. 

Smoke from wildfires in California has spread over our state. Most of the smoke is above 3-4,000 feet for hazy skies. However, some of the smoke will mix down to the surface dropping our air quality in a lot of places into the moderate range. The air quality will not be as poor or as persistent as it was in early September. In fact, onshore winds will start bringing cleaner air into the state tomorrow and into the weekend for improving air quality.

Thursday, the ridge of high pressure weakens slightly, and winds begin to turn onshore. Highs may begin to cool. taking temperatures back to low to mid-70s Thursday and Friday. Onshore flow strengthens over the weekend which will also bring back morning low clouds that clear to sunny skies in the afternoon. That pattern continues over the weekend and through the first half of next week with highs still above normal - in the mid to upper 60s.

Right now, it looks like the next chance of any significant rainfall is not until later Wednesday or Thursday of next week.