Climate change could worsen ozone levels across the U.S., study says

Smog could worsen across the United States in the coming decades as climate change boosts summer temperatures and makes ozone levels more difficult to control, a new study says.

Americans can expect the number of days with unhealthy air to jump 70% by mid-century unless emissions of smog-forming pollutants are slashed, according to a study led by the federally funded National Center for Atmospheric Research in Boulder, Colo.

Higher temperatures accelerate the formation of lung-searing ozone, the main ingredient of smog, and could set back decades of improvements in air quality, the study says.

Read full text in the LA Times