Air quality is slowly improving in western Washington after reaching unhealthy levels, one day after the area held its Independence Day celebrations. Measurements showed air quality in King, Snohomish and Pierce counties ranging from "unhealthy" to "hazardous" Wednesday morning. By Wednesday afternoon, air quality improved to "moderate." The poor air quality is a combination of smoke from existing Canadian wildfires, numerous brush fires sparked across western Washington and fireworks on Tuesday. These conditions were made worse by light winds overnight that failed to disperse the smoke. Read the full story here: https://www.king5.com/article/news/local/western-washington-unhealthy-hazardous-air-quality/281-5ae9c094-6a73-49f5-86b0-287de7088292