NEW YORK CITY (PIX11) — A heat advisory has been issued for New York City in anticipation of a heat wave that could see heat indices climb over 100 degrees.

The head advisory will take effect at noon on Tuesday and last until 9 p.m. on Wednesday.

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The high temperatures for both days will be in the mid to high-90s and will be accompanied by high humidity.

People are advised to hydrate and remain indoors or seek air-conditioned spaces to minimize the risk of heat-related illnesses and to stay hydrated.

Heat-related illnesses can be severe and potentially fatal. Understand the symptoms of these illnesses and the steps to take if you or someone you know exhibits these symptoms.

Heat stroke

Heat stroke occurs when the body loses its ability to regulate temperature, causing a rapid rise in body temperature. Body temperature could rise to 106 degrees or even higher within 10 to 15 minutes.

The body’s sweating mechanism fails, preventing it from cooling down effectively. Symptoms include:

Confusion, hallucinations, and disorientation

Loss of consciousness or being unresponsive

What to do: Call 911 immediately. Cool the person quickly by wetting their skin with cold, wet cloths or ice packs. Bring them to a cool place with fans or an AC, and stay with them until emergency medical services arrive.

If outdoors, move the person into a shaded, cool area, and remove outer clothing.

Heat exhaustion

Heat exhaustion occurs when the body loses excessive amounts of water and salt, typically through sweating. Symptoms include:

What to do: Move the person to a cooler space and have them sip water slowly and frequently. Remove unnecessary clothing and use cold compresses or cold water on the head, face, and neck. Heat exhaustion can lead to heat stroke, so contact 911 if medical care is unavailable.

Heat cramps

Excessive sweating can deplete the body’s salt and moisture levels, resulting in muscle cramps or spasms.

What to do: Have the person drink cool water or a drink that replenishes electrolytes, and apply firm pressure to the cramping muscle. Gently stretch and massage the cramped muscle. Seek medical help if cramps do not subside within one hour.

Heat rash

Heat rash is caused by excessive sweating. You may develop skin irritation that looks like a red cluster of blisters or pimples.

What to do: Move the person to a cool place and keep the skin dry. Apply powder for comfort, but do not use ointments or creams.

Ben Mitchell is a digital content producer from Vermont who has covered both local and international news since 2021. He joined PIX11 in 2024. See more of his work here.

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