Notification issued 8/15/16 at 8:00 AM. The National Weather Service has issued a Heat Advisory for New York City for today, 8/15, from 12:00 PM until 8:00 PM. These conditions are dangerous to health. Avoid strenuous activity. People without air conditioning, older adults, and people with chronic health conditions are most at risk. Cooling centers are open. For cooling center locations and hours, or information on avoiding heat illness, please visit: http://www.nyc.gov/beattheheat or call 3-1-1. For more information please visit www.weather.gov/nyc.