- Learn more about heat illness and heat waves from the Department of Health & Mental Hygiene.
- New Yorkers can beat the heat by obtaining a spray cap from their local firehouse. Applicants must be 18 years or older and complete a form to obtain a hydrant cap. The improper opening of fire hydrants wastes 1,000 gallons of water per minute, causes flooding on City streets, and can lower water pressure to dangerous levels and hamper the ability of FDNY to fight fire safely and quickly. Learn more from FDNY.
- Get information about ways to save energy from Con Edison and PSEG.
- For information about City services, including the locations and hours of operation for City cooling centers, contact 311.
Know the Terms
An estimate of how it feels when air temperature and humidity are combined.
Based on the heat index forecast, the National Weather Service could issue:
Heat Advisory: Issued when the heat index is forecast to reach 95°F to 99°F for at least 2 consecutive days, or 100°F to 104°F for any length of time.
Excessive Heat Watch: Issued 24 to 48 hours of an event when the heat index values are forecast to reach or exceed 105°F for at least two consecutive hours.
Excessive Heat Warning: Issued when the heat index values are forecast to be at least 105°F for more than 3 hours per day for 2 consecutive days, or heat index more than 115°F for any period of time.
Heat illness occurs when the body cannot cool down. The most serious forms of heat illness are heat exhaustion and heat stroke. For instance, heat stroke occurs when the body's temperature rises quickly, and can rapidly lead to death. Keeping cool can be hard work for the body. This extra stress on the body can also worsen other health conditions such as heart and lung disease.
Signs of Heat Illness
Serious signs of heat illness include:
•Hot, dry skin OR cold, clammy skin
•Confusion, hallucinations, disorientation
•Unconscious or unresponsive
•Nausea or vomiting
•Rapid, strong pulse
Call 911 or go to the emergency room right away if you or someone you know has these symptoms of heat illness:
•Light headedness, feeling faint
•Loss of appetite, nausea