The Environmental Protection Agency is in the midst of deciding exactly how low it is going to decrease the national smog pollution limit, otherwise known as ozone, and clean-air advocates want you to ...

The rules would lower the threshold for ozone from 75 parts per billion to between 65 ppb and 70 ppb. They are likely to be opposed by industry... The U.S. Environmental Protection Agency unveiled new ...

Add Yahoo as a preferred source to see more of our stories on Google. Memphis residents pushed back against the Byhalia Pipeline project. (Photo by Karen Pulfer Focht) Anti-pollution groups are ...

Our state’s air-quality agencies have posted our ozone results for 2025, and once again, the official ozone levels for Front Range Colorado exceed allowable federal levels. But this time there is a ...

Responding to a court order, the U.S. Environmental Protection Agency on Wednesday officially designated Bexar County as noncompliant with a new and stricter federal standard for ozone levels passed ...

EPA recently redesignated the Northern Wasatch Front and the Uinta Basin ozone nonattainment areas based on data demonstrating that the areas failed to meet the 2015 ozone National Ambient Air Quality ...

By the second week of June, the Dallas-Fort Worth region had seen six days in 2025 where the region’s ozone reached unhealthy levels. That number is down slightly from the seven Ozone Action Day ...

Ozone levels in Dallas-Fort Worth are the highest they’ve been in the past three years. And those numbers are not likely to go down to safe levels, according to the North Central Texas Council of ...

Getting your Trinity Audio player ready... The Front Range recorded its lowest ozone levels in 16 years this summer, but the region still needs to reduce air pollution to escape federal oversight that ...