San Antonio, Texas – Triple-digit heat index values and hazy skies will make for a dangerously hot Saturday across much of south-central Texas, including San Antonio. The National Weather Service expects heat indices to reach up to 102°F by mid-afternoon, triggering summer safety concerns for outdoor workers and travelers along I-35 and Loop 410.
According to the NWS office in Austin/San Antonio, Saturday’s high temperature will reach 96°F under mostly sunny skies, with light southeast winds around 5 to 10 mph. Conditions will worsen Sunday as haze becomes widespread, potentially impacting visibility for early July travel. Residents should limit outdoor activity, stay hydrated, and check on vulnerable individuals, especially during peak heat hours from 2 to 5 p.m.
Looking Ahead:
- Sunday: High 93°F with haze and light wind.
- Monday–Tuesday: Temps climb to 96–98°F with more haze and a chance of afternoon thunderstorms Tuesday.
- Wednesday–Thursday (July 2–3): Isolated storms possible. Highs stay near 97°F.
📆 Five-Day San Antonio Weather Snapshot:
- Friday (June 28): Mostly sunny, high 94°F
- Saturday (June 29): Mostly sunny, high 96°F — Heat Index 102°F
- Sunday (June 30): Partly sunny, hazy, high 93°F
- Monday (July 1): Hazy, high 96°F
- Tuesday (July 2): Hazy with storms possible, high 98°F
