For the first time since June 24, the Mississippi River is falling below flood stage in Rock Island.

As of 7 p.m. Sunday, the Mississippi River at Rock Island measured 15 feet, which is flood stage. It is expected to have fallen below 15 feet by this morning “continuing its downward descent,” said Tom Olsen, meteorologist for the National Weather Service, Davenport. “It should be at 13 feet by Friday,” he said.

The Rock River at Moline fell below its flood stage of 12 feet Saturday night and continues to fall, Olsen said. It measured 11.7 feet Sunday night.

The high Sunday was 89 in the Quad-Cities, and the early part of the week will remain hot, with increasing chances of showers and thunderstorms on Tuesday. Highs will be in the upper 80s today, with heat-index readings to 95, Olsen said. Tonight will be mostly cloudy with a 50 percent chance of showers and thunderstorms and lows in the lower 70s.

There’s a 60 percent chance of showers and thunderstorms Tuesday and Tuesday night, Olsen said. Once again, highs will be in the upper 80s with heat-index readings to 95.

“There’s a lot of humidity coming up from the Gulf of Mexico,” Olsen said.

Wednesday through Friday will be mostly sunny and dry, with highs in the lower 80s, he said.