San Antonio woke up Tuesday, June 30, 2026, to a thick, muggy blanket of clouds and temperatures already parked in the upper 70s. The city is in for yet another hot afternoon, with a high near 94°F and humidity set to push heat-index readings into the low 100s. A south-southeast breeze will build through the day, which will help a little with airflow but also make time outside feel hotter than the thermometer suggests.
Afternoon Heat And Gusts
According to the NWS Austin/San Antonio, highs are forecast near 94°F with south-southeast winds of 5–15 mph and gusts up to 20 mph this afternoon. Tonight, southeast winds of 5–15 mph could gust as high as 25 mph while lows hold in the mid-70s. Forecasters also expect heat-index values across much of the area to climb into the 100–106°F range, so anything from yard work to late-day jogs will feel significantly hotter than the actual air temperature. No watches or warnings are in effect for the San Antonio area at this time.
Local Resources And Cooling Sites
For anyone who needs a break from the heat, the city maintains an interactive map of more than 60 cooling spots and posts hot-weather guidance; residents can call 311 for the latest hours. See the City of San Antonio page for a full list of locations and detailed tips on staying safe when temperatures spike.
Holiday Weekend Outlook
The National Weather Service is calling for mostly sunny skies and a high near 96°F on Saturday, July 4, 2026, with only a very small chance of rain. Shower and thunderstorm chances are forecast to increase late Sunday into early next week as the ridge weakens, bringing a modest uptick in humidity and the potential for scattered storms.
Quick Tips
Limit strenuous outdoor activity during the hottest part of the day, drink plenty of water, and check on older adults, young children, and pets who may struggle with the heat. If someone shows signs of heat stroke, such as confusion, very high body temperature, or loss of sweating, call 911 immediately.
