Millions of residents across North Texas are being urged to stay indoors and limit outdoor activity this weekend, as air quality takes a hit, with officials from the National Weather Service (NWS) warning that pollution levels could climb into unhealthy territory.
An ‘Ozone Action Day’ has been declared for the Dallas–Fort Worth area through Sunday, May 24, as weather conditions set the stage for dangerous smog buildup.
What Areas Are Affected—and For How Long
The alert covers the Dallas–Fort Worth metro area, one of the largest urban regions in Texas and home to millions. Major cities, including Dallas, Fort Worth, and Arlington, as well as surrounding counties such as Tarrant, Collin, and Denton, are affected.
According to the Texas Commission on Environmental Quality (TCEQ), the weather conditions on Sunday—think heat, sunshine, and light winds—are ideal for ozone formation, especially in the afternoon and early evening.
What Ozone Actually Is
Ozone might sound harmless, but at ground level it’s a different story. This isn’t the protective ozone layer high in the atmosphere, which is “good” ozone—this is “bad” ozone, a key ingredient in smog, the TCEQ says…