Dallas

Dallas Chokes on Ozone as Swampy 90s Grip Holiday Weekend

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Published on May 28, 2026
Dallas Chokes on Ozone as Swampy 90s Grip Holiday WeekendSource: IcedCowboyCoffee, CC0, via Wikimedia Commons

Today is starting classic North Texas: mostly clear, muggy, and warming up fast. By mid-morning, Dallas is sitting near 72°F and headed for an afternoon high around 89°F. Light winds and strong sunshine will crank up the humidity factor and help set the stage for an Air Quality Alert tied to an Ozone Action Day. Sensitive residents and anyone planning outdoor workouts or events should be ready for poorer afternoon air and consider shifting activities indoors or to earlier in the day.

Afternoon Forecast

Look for sun to dominate much of today, with just a slight chance of showers and thunderstorms late in the day, mainly after about 4 p.m. Overall rain chances sit at 20%, and any storms that do pop up should be brief and produce under a tenth of an inch of rain. Winds stay light, generally out of the west at 0–5 mph, before temperatures ease back to around 72°F tonight. The Air Quality Alert and forecast details come from the NWS Fort Worth.

Ozone Alert And Health Tips

The Texas Commission on Environmental Quality has declared an Ozone Action Day for today, with ground-level ozone expected to build during the warm, sunny afternoon hours. That can aggravate asthma and heart conditions, especially for children, older adults, and people with existing respiratory issues. Try to move heavy outdoor chores and endurance workouts to the cooler morning or evening, keep rescue medications close if you use them, and limit time near busy roads during the hottest part of the day. For more on symptoms and recommended actions, see TCEQ.

Weekend Outlook

From Friday through Sunday, the region heats up into the low-to-mid 90s, with highs around 91°F tomorrow and climbing to about 94°F by next Sunday as a warming trend settles in. Rain chances stay low over the holiday weekend, though isolated afternoon storms may creep back into the picture early next week. If your plans keep you outside, build in shade breaks and plenty of water; otherwise, expect a stretch of dry, hot days.

Dallas-Weather & Environment