LOS ANGELES - Wildfire smoke has choked the West Coast as firefighters continue to battle massive wildfires spanning several states.
According to IQAir, an air quality monitoring system, many U.S. cities had the worst air quality of any major cities around the world as of Monday.Several major cities were affected, including Seattle, Los Angeles, San Francisco and Portland.Portland took the number-one spot, reaching hazardous air quality levels.
The hazardous category indicates high concentrations of hazardous particles in the air, including smoke, dust and soot.“In recent days, the air quality in many areas along the West Coast – including San Francisco, Portland, and Seattle, which normally have good air quality – has been worse than other.