People in western Washington woke up to hazy skies the morning after Fourth of July, and the Seattle area's air quality was among the worst of major U.S. cities Friday, according to IQ Air. The diminished air quality came as western Washington was set to be under a heat advisory beginning Friday afternoon, with temperatures expected to reach the upper 80s and even 90 degrees in some areas. As of 6:45 a.m. Friday, Seattle ranked as the third-worst air quality of any major U.S. city, behind only Detroit and Los Angeles. Read more: https://www.king5.com/article/news/health/seattle-air-quality-among-worst-us-heat-advisory/281-f4ba4cd3-9bbd-4cc9-a80d-7f4cd30352ee