Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.

* WHAT...Heat index values up to 98 expected. * WHERE...In New York, Southeastern St. Lawrence, Southern Franklin, Western Clinton, and Western Essex Counties. In Vermont, Essex and Orleans Counties. * WHEN...From 11 AM to 8 PM EDT Monday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.