A hot and humid air mass over the Midwest has prompted the heat advisory that’s in effect until Tuesday night.

The National Weather Service calls the situation dangerous and it poses an increased risk for heat related illness, especially in northwestern Missouri.

Profuse sweating, headache, nausea, muscle cramps and weakness are all signs of heat exhaustion and heat strokes.  Wear loose fitting clothing, drink plenty of water and if you work outside, schedule frequent breaks,  National Weather Service officials said

Temperatures are expected to reach the upper 90’s to the lower 100’s. Heat a index ranging from 105 to 115 across Missouri.