Here is the Air Quality Index chart from the Centers for Disease Control and Prevention: Lung-Wen Antony Chen, an associate professor in the Department of Environmental and Occupational Health at ...

The service provides information based on a measure called the Air Quality Index, which gauges just how bad the air has become in a particular place. Having an understanding of the Air Quality ...

The Air Quality Index in Delhi dropped to 999 over the weekend, making it the most polluted capital city in the world. While the safe limit set by the World Health Organisation is 25, anything ...

This measure, based on data from the Environmental Protection Agency, evaluates states on the number of days the Air Quality Index in counties was not rated “good.” U.S. News calculated a ...

The Houston area is among the worst in the country for air quality, according to the American Lung Association's State of the ...