Surging Gulf humidity will push heat index values higher by midweek, likely prompting heat advisories alongside an active air quality alert. While a shifting weather pattern could bring slight rain chances and cloud cover starting Friday, significant relief from the heat is not guaranteed. Humidity and air quality concernsThe heat will intensify Tuesday with a high near 102 degrees as southerly winds begin pumping Gulf moisture back into the region. An air quality alert is also in effect for much of North Texas, posing potential risks for individuals with respiratory conditions. While actual temperatures are expected to drop slightly toward the end of the week, surging humidity will keep heat index values elevated, likely triggering heat advisories by midweek.