Heat advisories and extreme heat warnings are in effect west of Houston this week as an unusually early heat wave takes hold. What do these heat alerts mean?

Tuesday will be windy and that will help to return humidity very quickly. With forecast highs in the mid and possibly upper 90s, current records could be broken by several degrees. The heat index will get close to 100 today,

Much of Texas is bracing for a blistering heat wave that could shatter daily temperature records this week and set a new all-time high for the month of May. Why it matters: Extreme temperatures are a major public health threat and play a role in droughts and wildfires.