So far this year, the South Coast air basin, which includes Los Angeles, Orange, Riverside and San Bernardino counties, has ...

Increase in wildfire-driven ozone linked to premature deaths across the U.S. Smog from wildfires is getting worse across much ...

For more than a decade, the United States dramatically reduced its national smog levels, but since 2015 smoke from ...

A recent study finds that smog levels have increased in the United States and may cause serious health hazards in the near ...

For decades, the United States made steady progress in reducing surface ozone pollution, the main ingredient in smog. But ...

A new study finds wildfires may be making the U.S. smoggy again, potentially back-peddling long-standing efforts to clean-up ...

IQAir, a Swiss company that measures global air quality, regularly designates Kazakhstan, Kyrgyzstan, and Uzbekistan’s major ...