September 03, 2026
The U.S. Environmental Protection Agency said it's appealing a California federal judge's decision ordering it to designate what parts of the country are meeting or not meeting new air quality standards for fine particulate matter by early February.
July 20, 2026
A California federal judge ordered the U.S. Environmental Protection Agency to designate areas of the country as either meeting, or not, national regulations for soot and other particulate matter by February, handing a win to 10 states and nonprofit groups that sued the agency for failing to do so.