A Thursday news conference at Allen's Landing will unveil a statewide map showing where pathogens keep turning up in Texas rivers and bayous.

Houston is headed for a nearly weeklong stretch of 97- to 99-degree afternoons, with heat indexes topping 105 and almost no rain in sight.

Houston faces another week of upper-90s heat, with heat indexes near 104 and little rain before a slight storm chance Saturday.

Clear skies are here, but so is a serious stretch of Houston heat. Saturday’s heat index could reach 106, with upper-90s temperatures continuing into next week.

Houston gets a brief storm chance Friday before a hotter, drier stretch takes over. Highs could reach 98 degrees next week.

Houston faces a 96-degree Thursday with a heat index up to 106, followed by a hotter, mostly dry weekend.

Houston will feel close to 110 degrees Wednesday, with isolated storms possible before a hotter, mostly dry weekend.

Houston will see clear skies, a 95-degree high and heat-index values up to 106 Tuesday. Even hotter, drier weather is building into the weekend.

Houston could see thunderstorms and strong downpours Monday before a hotter, drier stretch takes over Tuesday.

Houston faces a hot Saturday near 94 degrees, with storm chances increasing Sunday and Monday before another sunny stretch takes over.

Houston faces another hot, humid day Friday with a 103°F heat index and spotty afternoon thunderstorms. The weekend keeps the same steamy pattern.

Houston will climb to 97°F Tuesday with a heat index near 103°F. Rain chances stay low at first but improve from Thursday into the weekend.

Houston faces a sunny Monday with a high near 99 and heat index values up to 104. Isolated storms could appear late in the afternoon.