PORTLAND, Ore. (KOIN) -- Summer temperatures will peak this week around Portland as highs warm into the mid to upper 90s.
The summer heat has prompted heat alerts to fall over the Willamette Valley on Saturday. Dangerous heat will build into the mid to upper 90s by the afternoon hours. This comes as hazy conditions from Oregon wildfires move smoke into the Portland, Vancouver metro area. Air quality will likely decrease later in the day on Saturday and continue into Sunday.
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