Houston weather: Heat indexes values to remain near 100 for Thursday

South breezes will return Wednesday, so watch for patchy fog or drizzle followed by more highs in the low to mid 90s and heat index values near 100. Isolated showers are possible through the weekend. Also, keep in mind that ozone levels will remain elevated Thursday and an Air Quality Alert has been extended through Thursday evening. If you have respiratory issues, you may want to limit your amount of time outdoors.