Wednesday, July 22, 2026, Austin is already starting off warm under clear skies, with early morning readings in the upper 70s. Forecasters expect highs to climb into the low 100s today, with heat index values pushing as high as 114°F this afternoon. A Heat Advisory is in effect from noon to 8 p.m. CDT, so shifting strenuous outdoor activity to the cooler hours is the smart play.
Blistering Afternoon Ahead
Sunny skies and light winds will let temperatures surge quickly, with most of the metro topping out near 100 to 104°F and the hottest stretch running from about noon through early evening. Light north winds of 0 to 5 mph will limit mixing and can make the heat feel especially oppressive in built-up parts of the city. The National Weather Service has issued the Heat Advisory for noon to 8 p.m. CDT; see the full advisory at the National Weather Service.
Worst Of The Heat East Of I-35
The advisory mainly covers areas generally along and east of the I-35 corridor and parts of the Rio Grande Plains, where higher humidity will drive apparent temperatures to the highest levels. That puts downtown, East Austin, and neighborhoods east of I-35 in line for the most punishing heat index readings this afternoon. For local cooling centers, heat safety guidance, and resources, check the City of Austin's heat awareness page at the City of Austin.
How To Stay Safe
Avoid outdoor exertion during the peak heat window, roughly noon through 6 p.m., and move strenuous activities to early morning or evening when possible. Drink plenty of water, spend time in air-conditioned spaces if you can, and check on older relatives, neighbors, and anyone who does not have reliable cooling. Never leave children or pets unattended in vehicles, as interiors can reach lethal temperatures in minutes.
Looking Ahead
Thursday stays hot, with a high near 101°F and heat index values still pushing into the upper 100s, although northeast winds of 5 to 10 mph could bring occasional gusts up to 20 mph. Expect upper 90s to around 100°F through the weekend, with only small rain chances for the metro. Forecasters are also keeping an eye on Tropical Storm Bertha in the Gulf for potential impacts to the coastal plains later this week, but current guidance suggests limited direct effects for Austin.
