Most of the world has dirty air, with just 17% of cities globally meeting air pollution guidelines, a report Tuesday found.

LAHORE: Tens of millions of Pakistanis spent at least four months breathing toxic air pollution 20 times above safe levels, ...

Tens of millions of Pakistanis spent at least four months breathing toxic air pollution 20 times above safe levels, in the ...

The majority of the world is breathing in dirty air, according to the latest air quality report. So where does the U.S. rank?

The countries with the worst air quality included Bangladesh and India, according to an annual report from IQAir.