NEW YORK (VINnews) — New York City officials issued an Extreme Heat Warning for Wednesday through Friday, with heat index values expected to reach between 105 and 110 degrees. Forecasters said dangerously hot and humid conditions are expected to continue into Saturday and Sunday.

Health officials warned that extreme heat is one of the city’s deadliest weather hazards, contributing to more than 500 preventable deaths each year. Older adults, young children, people with chronic medical conditions and those without access to air conditioning face the greatest risk.

Officials urged residents to remain in air-conditioned buildings whenever possible, emphasizing that electric fans alone may not provide adequate protection in the forecast conditions. Those without air conditioning were encouraged to visit cooling centers, libraries, community centers or other public spaces.

Residents were advised to drink plenty of water throughout the day, even if they do not feel thirsty, wear lightweight, light-colored clothing and avoid strenuous outdoor activity during the hottest hours. Officials also recommended checking on elderly relatives, neighbors and others who may be vulnerable to heat-related illness.

Health officials said warning signs of heat illness include hot, dry skin, rapid heartbeat, difficulty breathing, dizziness, confusion, nausea and vomiting. Anyone experiencing severe symptoms should call 911 or seek immediate medical attention.

City officials also urged New Yorkers to prepare for possible power outages caused by increased electricity demand by ensuring they have necessary medications, water and emergency supplies readily available.