US cities with the worst air pollution
A recent report tracked air pollution levels in cities and countries around the world for 2018.
While the United States performs well compared to the worst offenders like India and China, a few US cities still suffer from poor air quality.
Major cities in California saw especially high pollution levels in 2018 due to wildfires,
Sacramento had the worst air pollution of any major city on earth in November.
Los Angeles is also struggling to recover from the California wildfire season.
In 2018, San Francisco’s air quality reached levels that could cause coughing and irritation.
San Diego’s air quality earned an ‘F’ letter grade.
Cincinnati, Ohio suffers from particle pollution, which is often produced by construction sites and automobiles.
Coal-fired power plants spell bad news for air quality in Indianapolis, Indiana.
Pittsburgh, Pennsylvania was just shy of WHO’s clean air threshold.
Traffic congestion in Boston, Massachusetts could be polluting the air.
Business Insider