Tracking Dangerous Heat In The U.S. - The New York Times

Home » How Hot Is It On Sunday » Tracking Dangerous Heat In The U.S. - The New York Times

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  1. Sunday
    A forecast map for Sunday
  2. Monday
    A forecast map for Monday
  3. Tuesday
    A forecast map for Tuesday
  4. Wednesday
    A forecast map for Wednesday
  5. Thursday
    A forecast map for Thursday
  6. Friday
    A forecast map for Friday
  7. Saturday
    A forecast map for Saturday

Dangerous levels of heat are not forecast in the contiguous United States on Sunday, according to data from the National Oceanic and Atmospheric Administration.

See temperatures on this page as: F°C°

Heat index forecast for Sunday

Heat index measures how hot it feels outside, accounting for temperature and humidity. Map shows highest level forecast for the day.

Caution Feels like 80°-90° Extreme caution 90°-103°

Source: NOAA  •  Note: Forecast data is as of 7:18 a.m. Eastern on January 25, 2026. Map shows the highest forecast heat index level on Sunday.

Jump to: Your areaMajor citiesThe week ahead

The heat index is a measure of how hot it really feels outside, taking into account humidity along with temperature. The measurement is used to indicate when the level of heat is dangerous for the human body while in the shade. When out in the sun, a person could perceive that temperature as being higher by up to 15 degrees Fahrenheit (8.3 degrees Celsius).

Risks associated with heat index levels

Caution

Fatigue is possible after long exposure or exercise.

A heat index of 80 to 90 degrees Fahrenheit

Extreme caution

Possible risk of heat stroke, heat cramps or heat exhaustion after long exposure or exercise.

90 to 103 degrees

Danger

Heat cramps or heat exhaustion is likely. After long exposure or exercise, heat stroke is also possible.

103 to 125 degrees

Extreme danger

Heat stroke is highly likely.

125 degrees or higher

Risk level definitions are from NOAA.

Hundreds of people die from extreme heat in the United States every year. On hot days, the National Weather Service recommends that people drink fluids, stay in cooler rooms, keep out of the sun and check up on relatives and neighbors, especially older people and those who live alone.

How hot will it feel in your area?

Look up the coming week’s forecast for places across the country, and see the heat index forecast in or near your city or town.

Heat index forecast for…

Heat forecasts in major cities

Here is the heat index forecast for major cities across the country.

City Mon. Mon. Tue. Wed. Thu. Fri. Sat. New York, N.Y. 19 23 8 12 7 7 15 Los Angeles, Calif. 68 73 73 68 71 75 73 Chicago, Ill. 7 -7 2 -2 0 5 9 Houston, Texas 25 30 46 44 48 45 39 Phoenix, Ariz. 66 68 71 73 73 75 77 Philadelphia, Pa. 23 24 10 -8 7 5 -3 San Antonio, Texas 24 32 46 48 55 51 42 San Diego, Calif. 66 71 68 64 66 68 68 Dallas, Texas 7 23 35 35 38 33 26 San Jose, Calif. 62 66 64 62 64 66 66 Austin, Texas 17 30 44 44 49 44 38 Jacksonville, Fla. 80 69 48 51 46 51 46 Fort Worth, Texas 7 16 38 35 38 33 28 Columbus, Ohio 14 3 7 -2 0 2 8 Indianapolis, Ind. 0 0 11 0 4 6 7 Charlotte, N.C. 30 32 31 35 26 28 28 San Francisco, Calif. 57 60 59 59 60 62 62 Seattle, Wash. 44 46 49 46 53 53 53 Denver, Colo. 0 43 47 46 46 44 49 Oklahoma City, Okla. 0 15 22 28 27 21 15 Nashville, Tenn. 23 6 26 19 17 18 13 El Paso, Texas 38 43 50 53 57 57 55 Washington, D.C. 30 28 21 17 9 6 12 Boston, Mass. 18 20 12 -6 0 5 12 Las Vegas, Nev. 59 60 62 62 66 68 68 Portland, Ore. 44 48 47 46 49 53 55 Detroit, Mich. 4 5 7 3 -4 2 6 Louisville, Ky. 9 2 15 10 8 10 10 Memphis, Tenn. 8 3 17 21 16 14 15 Baltimore, Md. 30 30 15 19 10 8 14 Show all +

Source: NOAA  •  Note: Forecast data is as of 7:18 a.m. Eastern on January 25, 2026. Values shown represent the highest forecast heat index level for each day.

The week ahead across the nation

While next-day forecasts can be quite accurate, forecasts become less reliable the further into the future they predict. Over the next week, dangerous levels of heat are not expected in the contiguous United States.

Heat index forecast for the next six days

Maps show the highest level forecast each day.

Monday, Jan. 26

A forecast map for Monday

Tuesday, Jan. 27

A forecast map for Tuesday

Wednesday, Jan. 28

A forecast map for Wednesday

Thursday, Jan. 29

A forecast map for Thursday

Friday, Jan. 30

A forecast map for Friday

Saturday, Jan. 31

A forecast map for Saturday

Source: NOAA  •  Note: Forecast data is as of 7:18 a.m. Eastern on January 25, 2026.

Summer temperatures have become hotter and more extreme in recent decades, and the health effects of extreme heat can be severe.

Maps on this page are as of 7:16 a.m. on Jan. 25, 2026, using data from the National Oceanic and Atmospheric Administration. All data shown are forecasts, including maps for the date of publication.

The highest forecast heat index is calculated using all available hourly forecasts for each day published by the NOAA. For some days further in the future, forecasts are published only every three or six hours. This means that the highest forecast heat index numbers are more accurate for the most recent maps.

Population calculations are based on census tract population centers from the U.S. Census Bureau. Tracts are determined to be at risk of dangerous heat if the population center of the tract is forecast to be exposed to a heat index of 103 degrees Fahrenheit or more.

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