CNN10d
The list of the world’s top 20 most polluted cities is out. All but one are in Asia
Meanwhile the cities with the worst pollution in North America were all in California. The report by IQAir, a Swiss company ...
AOL8d
Which cities in US have worst air quality? New report highlights alarming global trends
The United States' Environmental Protection Agency uses the Air Quality Index (AQI) to measure and communicate pollutant levels in the air. The AQI scale runs from 0 to 500, with higher values ...
It’s not China or the US: This country has 11 of the 20 most polluted cities in the world
Poor air quality poses serious health risks to humans. Industry, energy, and the transportation sector are all major ...
WOOD-TV6d
West Michigan’s air quality worst in the US Saturday
As of 3 p.m., Grand Rapids reported the worst air quality in the United States, ranking over other Midwestern cities also dealing with dust. The Air Quality Index in Grand Rapids was 397 ...