Next week, the Eastern and Central US can expect days of high temperatures above 90 degrees. According to AccuWeather RealFeel®, the temperatures will occasionally approach the 100-degree Fahrenheit mark.

AccuWeather Heat Warning

Tens of millions of people will be impacted by this heat wave. Those who don’t typically experience long-lasting summertime heat will now face extreme temperatures. Sunset won’t bring relief either, as overnight temperatures are expected to remain in the upper 60s to low 70s in many locations.

AccuWeather Chief Video Meteorologist Bernie Rayno warned, "The increased demand for cooling is going to be a problem here. This could have some impacts on the power grid."

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Heat Index and Humidity

The presence of humidity with extreme heat can elevate the heat index, which reflects how hot it feels to the human body, to dangerous triple digits. Next week, the US may see heat index values in the low 100s as far north as Maine.

Health Risks

The health risks from heat will reach extreme levels for large parts of the US next week, according to the National Weather Service and CDC. 

Heat is the deadliest form of weather, killing more than twice as many people annually as hurricanes and tornadoes combined.

12 Signs and Symptoms of Heat Stroke and Dehydration

1. Fatigue or excessive tiredness
2. Flushed or reddened skin
3. Dry skin, decreased skin elasticity, and cracked lips
4. Headaches
5. Muscle weakness or cramps
6. Dark-colored urine and low urine output
7. Dizziness or lightheadedness
8. Body temperature of 104°F or higher
9. Altered mental state or cognitive issues, including confusion, agitation, irritability, disorientation, slurred speech, and delirium
10. Low blood pressure, dizziness, lightheadedness, staggering, or fainting
11. Nausea and/or vomiting
12. Rapid or fast breathing and heartbeat

Ignoring these signs can lead to severe consequences, including fainting, losing consciousness, or in extreme cases, seizures or blackouts. If symptoms worsen, contact a healthcare provider or call 911.

Tips to Stay Cool and Safe

• Be prepared: Check the weather forecast before going out.
• Stay hydrated: Drink plenty of water.
• Apply cold compresses: Use them on your neck or head.
• Seek shade: Stay under cover or create your own shade.
• Wear appropriate clothing: Choose lightweight, light-colored clothes.
• Limit sun exposure: Use sunscreen and avoid direct sunlight.
• Avoid strenuous activities: Minimize body heat and sweat.
• Use air conditioning and fans: Maintain good airflow indoors.

Following these guidelines can help mitigate the risks of extreme heat and ensure safety during the upcoming heat wave.