The EPA says the Cleveland area now meets national ozone standards after seeing more than a 40% decrease in pollutants over ...

Researchers have linked an increase in wildfire-driven ozone pollution to more than 300 additional premature deaths in the ...

Expect moderate levels of ground-level ozone, an urban pollutant that can affect those with sensitive respiratory systems, to be in the skies over the Houston metro area on Friday, according to Texas ...

With temperatures set to soar again in Europe, the link between heatwaves and air pollution is back under the spotlight.

For a large part of the last two weeks, Steven Brown, an air quality chemist with the National Oceanic and Atmospheric Administration, has soared over Colorado’s Front Range in a slow-flying Twin ...

A group of researchers identified key synoptic weather patterns (SWPs) linked to severe ground-level ozone pollution in the Yangtze River Delta (YRD), and established the relationship between SWPs ...

INDIANAPOLIS — The first "Knozone Action Day" of 2025 has been declared for Indianapolis. The Indianapolis Office of Sustainability is issuing a Knozone Action Day for Thursday, June 12 in ...

As the adoption of cleaner-burning engines and electric vehicles drives fossil fuel emissions lower, scientists have discovered that a surprising pollution source is playing a significant role in ...

Ground-level ozone forms when pollutants from cars and other sources react with sunlight. It often spikes on hot sunny days.