National Weather Service United States Department of Commerce

Lowell to Impact Hawaii; Heat Persists in the South-Central U.S.

Hurricane Lowell is forecast to pass west of Kauai`s coastal waters tonight. Impacts such as high surf and heavy rain could impact all of the islands. Sweltering heat remains across the South-Central Plains and Lower/Middle Mississippi Valley into this week with limited nighttime relief. Periods of moderate to heavy rainfall will be possible through Tuesday morning in the northern Rockies. Read More >

On Tuesday, air quality in the St. Louis region is forecast to be unhealthy for elderly individuals, children, and those with heart/lung conditions due to relatively high levels of ozone. For more information go to http://www.airnow.gov.
The heat will return to the area today with high temperatures in the 90s. The highest temperatures and humidity will be over central Missouri where afternoon and early evening heat indexes will climb to around 105 degrees where a heat advisory is in effect.