Extreme Heat Warning, July 1 to 4

June 30, 2026

We are entering summer’s first heat wave, with the National Weather Service issuing an Extreme Heat Warning for New York City and its surrounding region in effect from Wednesday, July 1 through Saturday, July 4. The National Weather Service is predicting dangerously hot conditions with heat index values up to 110 degrees Fahrenheit possible. 

An Extreme Heat Warning means that the combination of heat and humidity could create a dangerous situation in which heat illnesses are possible. Take extra precautions if working outside and use air conditioning inside. 

STAY SAFE 

We encourage everyone to learn about the signs of heat stroke and to call 911 immediately if you see someone exhibiting those signs. Use local cooling centers if you do not have air conditioning or need a respite when out-and-about, and review these safety tips from New York City Emergency Management: 

  • Avoid strenuous physical activity
  • Drink plenty of water, even if you are not thirsty
  • Stay in the shade and out of the direct sun
  • Wear light, loose-fitting clothes
  • Put a hat on to protect your face and head
  • Use sunscreen with SPF 15 or higher
  • Limit extended outdoor activities to early morning and late evening hours
  • Avoid drinks with alcohol, caffeine, or sugar 

 Get more Beat the Heat tips and resources. 

CONSERVE ENERGY 

During these extreme conditions, there is a greater risk of electrical blackouts. You can help Columbia conserve energy by following these simple steps during the heat wave and throughout these hot summer months. 

  • Turn off air conditioners when a room is unoccupied
  • Set air conditioner fan speeds to the lowest setting possible and keep thermostats at higher temperatures for energy conservation
  • Keep exterior doors, windows, shades and blinds closed
  • Turn lights, appliances and electronics off when not needed
  • Make sure cell phones and any portable chargers/power packs are fully charged
  • Prepare your laboratory. Connect critical equipment to emergency outlets, shut down unattended experiments, limit highly hazardous experiments due to the possibility of power outages, and secure any temperature-sensitive materials which require refrigeration or those which may become unstable at elevated ambient temperatures, in accordance with their Safety Data Sheets
  • Familiarize yourself with emergency protocols in the event of a power outage  

 Get more energy saving tips from Con Edison.  

WHAT WE ARE DOING 

During the day, Facilities and Operations staff are optimizing the use of our steam chillers to cool buildings and minimizing the use of our electric chillers to reduce the total electric load on our system. At night, we are “pre-cooling” buildings, which reduces energy demand during peak daytime hours.  Our Facilities Services Center (212-854-2222) is prepared to handle increased call volume.     

CONTACT US  

We are here to help. In the event of an on-campus emergency, contact Public Safety at 212-854-5555 (Morningside Campus) or 212-853-3333 (Manhattanville Campus). Contact the Facilities Services Center at 212-854-2222 with any issues or concerns.