SAN ANTONIO, Texas – Central Texas residents will face another round of summer-like heat and stagnant air as state officials issue an Ozone Action Day for the San Antonio metro area. Temperatures will soar into the low 90s through Friday, raising air quality concerns and making this one of the warmest mid-October stretches on record for the region.
According to the Texas Commission on Environmental Quality (TCEQ) and the National Weather Service in Austin/San Antonio, light winds and high pressure will trap ozone near the surface today, prompting the alert through Wednesday evening. Commuters along I-35 and Loop 410 are urged to limit driving, avoid idling, and consider carpooling or using public transportation. Residents should also delay fueling or mowing until late evening when ozone levels fall.
Health officials recommend that children, seniors, and those with respiratory conditions minimize outdoor activity during afternoon hours. Skies will remain mostly sunny, with highs near 91°F each day through Friday and lows in the upper 60s. Though no rain is expected, the warm pattern will begin to ease slightly by Sunday.
By the weekend, a light shift in winds may bring marginally cleaner air and slightly cooler afternoons in the upper 80s—ideal for pumpkin patches, local football games, or evening fall events.
Clear skies will continue into early next week as Central Texas transitions toward a more seasonable late-October pattern.
Five-Day Forecast for San Antonio, TX:
Wed: 91/66 – Sunny; ozone alert in effect, limit outdoor activity.
Thu: 89/68 – Mostly sunny; light winds, hot for mid-October.
Fri: 91/72 – Sunny; continued air quality concerns.
Sat: 94/71 – Hot but clear; great for outdoor events by evening.
Sun: 91/67 – Mostly sunny; slightly cooler, improving air quality.
