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Tracking Dangerous Heat in the U.S.

By Matthew Bloch, Lazaro Gamio, Zach Levitt, Eleanor Lutz, Bea Malsky and John-Michael Murphy

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

Dangerous levels of heat are forecast in the South and West on Thursday, according to data from the National Oceanic and Atmospheric Administration.

See temperatures on this page as:

Heat index forecast for Thursday

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°
Danger 103°-125°

Heat index forecast for Thursday

A map showing the highest forecast heat index level in the contiguous United States on Thursday.
A forecast map for Thursday
CALIF.
NEV.
LA.
TEXAS
ALA.
ARIZ.
ARK.
COLO.
FLA.
GA.
IDAHO
ILL.
IND.
IOWA
KAN.
KY.
MAINE
MD.
MASS.
MICH.
MINN.
MISS.
MO.
MONT.
NEB.
N.J.
N.M.
N.Y.
N.C.
N.D.
OHIO
OKLA.
ORE.
PA.
S.C.
S.D.
TENN.
UTAH
VA.
WASH.
W.VA.
WIS.
WYO.
A forecast map for Thursday
CALIF.
NEV.
LA.
TEXAS
ALA.
ARIZ.
ARK.
COLO.
CONN.
DEL.
FLA.
GA.
IDAHO
ILL.
IND.
IOWA
KAN.
KY.
MAINE
MD.
MASS.
MICH.
MINN.
MISS.
MO.
MONT.
NEB.
N.H.
N.J.
N.M.
N.Y.
N.C.
N.D.
OHIO
OKLA.
ORE.
PA.
S.C.
S.D.
TENN.
UTAH
VT.
VA.
WASH.
W.VA.
WIS.
WYO.
A forecast map for Thursday
CALIF.
NEV.
LA.
TEXAS
ALA.
ARIZ.
ARK.
COLO.
CONN.
DEL.
FLA.
GA.
IDAHO
ILL.
IND.
IOWA
KAN.
KY.
MAINE
MD.
MASS.
MICH.
MINN.
MISS.
MO.
MONT.
NEB.
N.H.
N.J.
N.M.
N.Y.
N.C.
N.D.
OHIO
OKLA.
ORE.
PA.
R.I.
S.C.
S.D.
TENN.
UTAH
VT.
VA.
WASH.
W.VA.
WIS.
WYO.
A forecast map for Thursday
CALIF.
NEV.
LA.
TEXAS
ALA.
ARIZ.
ARK.
COLO.
CONN.
DEL.
FLA.
GA.
IDAHO
ILL.
IND.
IOWA
KAN.
KY.
MAINE
MD.
MASS.
MICH.
MINN.
MISS.
MO.
MONT.
NEB.
N.H.
N.J.
N.M.
N.Y.
N.C.
N.D.
OHIO
OKLA.
ORE.
PA.
R.I.
S.C.
S.D.
TENN.
UTAH
VT.
VA.
WASH.
W.VA.
WIS.
WYO.
Source: NOAA Map shows the highest forecast heat index level on Thursday.

About 52.2 million people — 16 percent of the population of the contiguous United States — live in the areas expected to have dangerous levels of heat.

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…

Over the next week in {city_name}, the highest heat index forecast is {weekly_max_temp} degrees {temp_unit} on {weekly_max_day}. Compared with today, forecasts show that the heat index will be {week_outlook}.

Heat forecasts in major cities

During this weeklong period, 93 major cities are forecast, as of Thursday, to have dangerous levels of heat on one or more days.

City
Thu.
Fri.
Sat.
Sun.
Mon.
Tue.
Wed.
Gilbert, Ariz.
113
111
110
112
112
111
109
Chandler, Ariz.
112
111
110
112
111
109
109
Phoenix, Ariz.
111
109
109
111
111
109
107
Dallas, Texas
111
109
110
106
107
107
108
Austin, Texas
111
109
110
106
104
104
106
Mesa, Ariz.
111
109
110
112
110
111
108
Irving, Texas
111
109
110
106
107
106
108
Fort Worth, Texas
110
109
110
108
108
107
108
Glendale, Ariz.
110
108
109
111
111
108
107
Scottsdale, Ariz.
110
108
109
112
110
109
107
Grand Prairie, Texas
110
109
110
108
108
106
108
Peoria, Ariz.
110
108
110
112
112
109
107
Tempe, Ariz.
110
109
109
112
110
111
107
Killeen, Texas
110
106
106
105
104
104
105
Arlington, Texas
109
108
110
106
107
106
106
Corpus Christi, Texas
109
111
109
106
106
106
106
San Antonio, Texas
108
106
109
104
102
103
104
Tucson, Ariz.
108
106
105
102
102
104
100
Brownsville, Texas
108
110
110
105
106
106
107
Plano, Texas
107
110
110
105
108
106
107
Laredo, Texas
107
109
109
104
103
104
105
Garland, Texas
107
107
110
105
108
105
105
Frisco, Texas
107
110
111
106
108
107
108
McKinney, Texas
107
111
109
106
107
107
106
Savannah, Ga.
107
105
107
109
106
102
103
Tallahassee, Fla.
106
106
105
106
108
106
106
Houston, Texas
105
106
106
106
107
106
106
Jacksonville, Fla.
105
103
101
103
103
103
105
St. Petersburg, Fla.
105
105
105
105
103
106
105
Las Vegas, Nev.
103
100
100
101
102
104
104
Miami, Fla.
103
103
101
98
100
101
101
Charleston, S.C.
103
103
106
109
101
98
100
Lafayette, La.
103
106
108
107
108
111
109
Gulfport, Miss.
103
103
106
106
108
106
103
El Paso, Texas
102
102
105
98
97
98
99
New Orleans, La.
102
105
105
105
106
106
105
Orlando, Fla.
102
103
103
103
103
105
106
Baton Rouge, La.
102
106
109
109
110
110
107
Hialeah, Fla.
102
105
102
99
99
100
100
Fort Lauderdale, Fla.
102
103
102
97
99
100
100
Tampa, Fla.
101
101
103
103
101
103
103
Fayetteville, N.C.
101
102
104
107
94
90
99
Augusta, Ga.
100
102
105
109
101
92
101
Shreveport, La.
100
108
109
107
107
109
106
Biloxi, Miss.
100
102
103
105
106
105
102
Key West, Fla.
100
103
103
99
100
101
100
Montgomery, Ala.
99
101
102
106
105
100
102
Mobile, Ala.
99
103
105
106
108
105
103
Macon, Ga.
99
101
105
109
109
100
106
Oklahoma City, Okla.
98
109
109
98
104
106
105
Tulsa, Okla.
98
113
114
98
106
105
108
Tuscaloosa, Ala.
98
101
105
106
101
103
105
Hattiesburg, Miss.
98
105
106
106
109
107
105
Birmingham, Ala.
96
98
105
106
100
100
102
Athens, Ga.
96
97
102
105
100
92
100
Tupelo, Miss.
96
103
105
107
94
102
107
Nashville, Tenn.
95
105
109
100
86
98
109
Columbus, Ga.
95
99
102
106
107
100
104
Little Rock, Ark.
95
103
113
106
96
111
111
Chattanooga, Tenn.
95
102
106
106
92
98
106
Jackson, Miss.
95
105
106
108
105
107
107
Memphis, Tenn.
94
103
110
102
90
102
109
Raleigh, N.C.
94
100
103
106
88
88
98
Durham, N.C.
94
98
101
105
87
87
98
Huntsville, Ala.
94
99
102
106
91
97
103
Cary, N.C.
94
99
102
105
88
87
98
Murfreesboro, Tenn.
94
105
106
103
87
99
107
Southaven, Miss.
94
101
107
100
90
101
107
Charlotte, N.C.
93
98
105
107
88
86
97
Bakersfield, Calif.
93
93
96
98
99
101
104
Chesapeake, Va.
93
88
103
105
85
85
90
Richmond, Va.
93
88
102
104
83
85
93
Newport News, Va.
93
86
101
105
84
83
90
Olive Branch, Miss.
93
101
107
102
90
101
109
Wichita, Kan.
92
108
99
88
104
105
99
Norfolk, Va.
92
86
103
105
85
84
90
Baltimore, Md.
91
84
95
105
84
85
94
Fresno, Calif.
91
92
94
95
98
101
105
Clarksville, Tenn.
91
100
107
95
83
95
105
Fayetteville, Ark.
91
98
106
93
96
101
102
St. Louis, Mo.
90
92
106
80
82
101
106
Washington, D.C.
89
85
97
105
81
84
93
Springfield, Mo.
89
96
103
84
90
103
103
Alexandria, Va.
89
85
98
105
81
84
93
Bowling Green, Ky.
89
102
105
92
82
96
102
Kansas City, Mo.
88
97
92
80
97
104
98
Overland Park, Kan.
88
98
93
82
97
104
98
Kansas City, Kan.
88
98
93
82
98
105
98
Lawrence, Kan.
88
103
92
83
101
105
100
Olathe, Kan.
87
99
93
82
97
103
100
Topeka, Kan.
87
107
91
83
104
104
100
Cincinnati, Ohio
86
96
103
85
78
91
101
Modesto, Calif.
86
90
93
94
99
100
103
Source: NOAA Values shown represent the highest forecast heat index level for each day. Forecast data is as of 8:44 a.m. on June 27, 2024.

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 expected across many areas of the contiguous United States.

Heat index forecast for the next six days

Maps show the highest level forecast each day.

Caution Feels like 80°-90°
Extreme caution 90°-103°
Danger 103°-125°

Friday, June 28

A forecast map for Friday

Saturday, June 29

A forecast map for Saturday

Sunday, June 30

A forecast map for Sunday

Monday, July 1

A forecast map for Monday

Tuesday, July 2

A forecast map for Tuesday

Wednesday, July 3

A forecast map for Wednesday
Source: NOAA

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

Methodology

Maps on this page are as of 8:44 a.m. on June 27, 2024, 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.