It’s a hot one — so sultry, in fact, the National Weather Service issued a heat advisory.

The advisory is in effect for Erie and Chautauqua counties from 11 a.m. to 6 p.m. today. The rest of Western New York has similar advisories up.

“Heat index values in the upper 90s expected inland from the Lake Erie shoreline,” according to the advisory.

“Hot temperatures and high humidity may cause heat illnesses to occur,” it warns. “Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young

children and pets should never be left unattended in vehicles under any circumstances.

“Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or

evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose-fitting clothing when

possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air-conditioned environments. “Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.”