A fleet of air quality monitoring vehicles took to the streets of California yesterday, marking the start of a year long ...

"You can find daily ozone forecasts and real-time ozone conditions for over 300 cities across the country at the AIRNow Web site: airnow.gov," the EPA says. Residents across parts of Arizona faced ...

According to the Environmental Protection Agency (EPA), ozone exposure can irritate the respiratory tract, causing coughing, ...

Gov. Gavin Newsom and state lawmakers scaled back a law that was vilified for its role in California’s housing shortage and ...