Dallas-Fort Worth is staring down an Ozone Action Day today, as light winds and strong sunshine are expected to let ground-level ozone climb into ranges that can bother people with breathing or heart problems. The advisory runs through Sunday evening across much of North Texas, and officials are urging residents to cut back on driving and to avoid strenuous outdoor activity during the afternoon, when ozone typically peaks.
Ozone Action Day declared
The Texas Commission on Environmental Quality formally declared today an Ozone Action Day, and the notice was relayed by the National Weather Service office in Fort Worth yesterday. The weather service noted that the alert was issued at 2:25 p.m. CDT and is set to expire at 5:30 p.m. today. The advisory lays out simple steps residents can take to help limit ozone, including sharing rides, skipping drive-through lanes, conserving energy, and keeping vehicles properly tuned, according to the National Weather Service Fort Worth.
Where the alert applies and why
The Fort Worth Star-Telegram reported that the alert covers Wise, Denton, Collin, Parker, Tarrant, Dallas, Hood, Johnson, Hunt, Rockwall, Kaufman, Ellis, and Henderson counties, and said the alert was reported yesterday. Statewide ozone forecasts from the Texas Commission on Environmental Quality explain that a setup of light winds, warm temperatures, and afternoon sunshine can allow ozone to build, and models show concentrations could reach the lower end of the “Unhealthy for Sensitive Groups” range in parts of the region, according to the Texas Commission on Environmental Quality.
Who should watch their breath and what to do
Under the EPA’s Air Quality Index, values between 101 and 150 are labeled “Unhealthy for Sensitive Groups,” meaning children, older adults, and people with heart or lung disease are advised to cut back on prolonged outdoor exertion. Officials echo that guidance on ozone action days and suggest practical steps like shortening or rescheduling outdoor exercise, combining errands, and choosing transit or carpooling to help reduce ozone-forming pollution, according to AirNow.
Longer-term picture
The North Central Texas Council of Governments notes that the DFW region remains in non-attainment for ozone and reports a 2026 ozone design value of 79 parts per billion as of last Monday, underscoring why action days recur during the warm months. Continued monitoring, along with voluntary changes in daily habits, is a key piece of regional efforts to bring ozone levels down.
