
J.J. Gouin / Shutterstock.com

Philip Lange / Shutterstock.com

Austin Texas Lake Front by StuSeeger / BY 2.0 (https://creativecommons.org/licenses/by/2.0/)

Kruck20 / iStock via Getty Images

Jacob Boomsma / Shutterstock.com

Matt Gush / Shutterstock.com

Citysqwirl / iStock via Getty Images

Art Wager / E+ via Getty Images

RoschetzkyIstockPhoto / iStock via Getty Images

Manuela Durson / Shutterstock.com

f11photo / iStock via Getty Images

DenisTangneyJr / iStock via Getty Images

Sean Pavone / iStock via Getty Images

felixmizioznikov / iStock via Getty Images

Art Wager / E+ via Getty Images

Pavliha / iStock Unreleased via Getty Images

Aneese / iStock via Getty Images

Ryan Tishken / iStock via Getty Images

Juanmonino / iStock via Getty Images

felixmizioznikov / iStock via Getty Images

ImagineGolf / iStock via Getty Images

DenisTangneyJr / iStock via Getty Images

Michael Warren / iStock via Getty Images

TriggerPhoto / iStock via Getty Images

SeanPavonePhoto / iStock via Getty Images

SeanPavonePhoto / iStock via Getty Images

John Coletti / The Image Bank via Getty Images

BCFC / iStock via Getty Images

Matt Gush / Shutterstock.com

4kodiak / E+ via Getty Images

DenisTangneyJr / iStock via Getty Images

DenisTangneyJr / iStock via Getty Images

dszc / iStock via Getty Images

DenisTangneyJr / iStock via Getty Images

JeffreyRasmussen / iStock via Getty Images



































Weather this summer has hit record highs, with many areas seeing the thermometer rise to triple-digit temperatures. In cities across the globe, people have felt the effects of rising temperatures. The weather has been so extreme in several regions that old terms like "heat dome" have been revived to describe what are large high-pressure systems that push warming air to the surface and trap it, which results in higher-than-normal temperatures
According to the NOAA National Weather Service, about 44.3 million people live in areas where dangerous levels of heat have been forecast. To gauge how hot it feels, humidity must be factored in. This combination of temperature and humidity is called the heat index. People have often mentioned dry heat versus humidity. While a dry heat can still be hot, the addition of humidity takes it to new levels. Humidity prevents a body from cooling down, making it feel more oppressive.
To determine the major U.S. cities that saw high temperatures, 24/7 Tempo reviewed data on heat index forecasts from the NOAA's National Centers for Environmental Prediction. Cities were ranked based on the average forecasted heat index maximum for July 19-21, 2024. Data was aggregated from points to cities using Voronoi tessellation and place boundaries from the U.S. Census Bureau's TIGER/Line program. Only cities with at least 150,000 residents were considered.
Population data is from the Census Bureau's American Community Survey and are five-year estimates for 2022. (Check out cities where summers are getting hotter.)
34. Baton Rouge, LA
- Forecasted heat index maximum for July 19, 2024: 100.3°F
- Forecasted heat index maximum for July 20, 2024: 100.1°F
- Forecasted heat index maximum for July 21, 2024: 100.1°F
- Total population: 225,500
33. Austin, TX
- Forecasted heat index maximum for July 19, 2024: 99.2°F
- Forecasted heat index maximum for July 20, 2024: 100.5°F
- Forecasted heat index maximum for July 21, 2024: 101.4°F
- Total population: 958,202
32. Augusta, GA
- Forecasted heat index maximum for July 19, 2024: 100.0°F
- Forecasted heat index maximum for July 20, 2024: 101.1°F
- Forecasted heat index maximum for July 21, 2024: 100.3°F
- Total population: 201,615
31. Fresno, CA
- Forecasted heat index maximum for July 19, 2024: 99.5°F
- Forecasted heat index maximum for July 20, 2024: 100.6°F
- Forecasted heat index maximum for July 21, 2024: 102.1°F
- Total population: 541,528
30. Bakersfield, CA
- Forecasted heat index maximum for July 19, 2024: 99.2°F
- Forecasted heat index maximum for July 20, 2024: 100.7°F
- Forecasted heat index maximum for July 21, 2024: 102.6°F
- Total population: 404,321
29. Pasadena, TX
- Forecasted heat index maximum for July 19, 2024: 101.6°F
- Forecasted heat index maximum for July 20, 2024: 100.6°F
- Forecasted heat index maximum for July 21, 2024: 101.0°F
- Total population: 150,620
28. Houston, TX
- Forecasted heat index maximum for July 19, 2024: 102.0°F
- Forecasted heat index maximum for July 20, 2024: 101.8°F
- Forecasted heat index maximum for July 21, 2024: 102.1°F
- Total population: 2,296,253
27. Corpus Christi, TX
Corpus Christi Texas Aerial Over Marina With a Circle pattern on the T-head and Sailboats and Yatch's on the marina on an amazing day with the CCTX skyline cityscape background and the Harbor Bridge in the distance. Coastal Small Town Paradise vibe.
- Forecasted heat index maximum for July 19, 2024: 102.9°F
- Forecasted heat index maximum for July 20, 2024: 101.8°F
- Forecasted heat index maximum for July 21, 2024: 103.3°F
- Total population: 317,804
26. Tucson, AZ
- Forecasted heat index maximum for July 19, 2024: 102.6°F
- Forecasted heat index maximum for July 20, 2024: 103.2°F
- Forecasted heat index maximum for July 21, 2024: 102.7°F
- Total population: 541,033
25. Las Vegas, NV
- Forecasted heat index maximum for July 19, 2024: 101.8°F
- Forecasted heat index maximum for July 20, 2024: 103.2°F
- Forecasted heat index maximum for July 21, 2024: 104.0°F
- Total population: 644,835
24. Laredo, TX
Laredo is the county seat of Webb County, Texas, United States, on the north bank of the Rio Grande in South Texas, across from Nuevo Laredo, Tamaulipas, Mexico.
- Forecasted heat index maximum for July 19, 2024: 103.6°F
- Forecasted heat index maximum for July 20, 2024: 102.4°F
- Forecasted heat index maximum for July 21, 2024: 103.1°F
- Total population: 255,293
23. Fort Lauderdale, FL
- Forecasted heat index maximum for July 19, 2024: 103.7°F
- Forecasted heat index maximum for July 20, 2024: 104.1°F
- Forecasted heat index maximum for July 21, 2024: 101.7°F
- Total population: 182,673
22. Hollywood, FL
- Forecasted heat index maximum for July 19, 2024: 103.8°F
- Forecasted heat index maximum for July 20, 2024: 104.3°F
- Forecasted heat index maximum for July 21, 2024: 101.8°F
- Total population: 152,764
21. Miami, FL
- Forecasted heat index maximum for July 19, 2024: 103.9°F
- Forecasted heat index maximum for July 20, 2024: 104.7°F
- Forecasted heat index maximum for July 21, 2024: 102.0°F
- Total population: 443,665
20. North Las Vegas, NV
- Forecasted heat index maximum for July 19, 2024: 102.5°F
- Forecasted heat index maximum for July 20, 2024: 103.8°F
- Forecasted heat index maximum for July 21, 2024: 104.6°F
- Total population: 264,022
19. Tallahassee, FL
The old Florida State Capitol building as seen from Monroe St and Apalachee Parkway with the New Capitol in the background
- Forecasted heat index maximum for July 19, 2024: 105.0°F
- Forecasted heat index maximum for July 20, 2024: 104.1°F
- Forecasted heat index maximum for July 21, 2024: 104.5°F
- Total population: 198,259
18. Port St. Lucie, FL
Beachside homes in the Fort Pierce area on South Hutchinson Island in St. Lucie County, Florida, USA.
- Forecasted heat index maximum for July 19, 2024: 105.3°F
- Forecasted heat index maximum for July 20, 2024: 105.4°F
- Forecasted heat index maximum for July 21, 2024: 103.2°F
- Total population: 210,520
17. Hialeah, FL
- Forecasted heat index maximum for July 19, 2024: 105.7°F
- Forecasted heat index maximum for July 20, 2024: 105.9°F
- Forecasted heat index maximum for July 21, 2024: 103.8°F
- Total population: 222,996
16. Pembroke Pines, FL
- Forecasted heat index maximum for July 19, 2024: 105.7°F
- Forecasted heat index maximum for July 20, 2024: 105.9°F
- Forecasted heat index maximum for July 21, 2024: 103.7°F
- Total population: 170,472
15. Henderson, NV
- Forecasted heat index maximum for July 19, 2024: 104.5°F
- Forecasted heat index maximum for July 20, 2024: 105.8°F
- Forecasted heat index maximum for July 21, 2024: 106.6°F
- Total population: 318,063
14. Brownsville, TX
- Forecasted heat index maximum for July 19, 2024: 106.5°F
- Forecasted heat index maximum for July 20, 2024: 105.5°F
- Forecasted heat index maximum for July 21, 2024: 106.6°F
- Total population: 186,999
13. St. Petersburg, FL
- Forecasted heat index maximum for July 19, 2024: 105.3°F
- Forecasted heat index maximum for July 20, 2024: 106.9°F
- Forecasted heat index maximum for July 21, 2024: 106.5°F
- Total population: 259,343
12. Cape Coral, FL
- Forecasted heat index maximum for July 19, 2024: 105.7°F
- Forecasted heat index maximum for July 20, 2024: 106.7°F
- Forecasted heat index maximum for July 21, 2024: 106.8°F
- Total population: 198,912
11. Jacksonville, FL
Jacksonville, Florida, USA downtown city skyline on St. Johns River.
- Forecasted heat index maximum for July 19, 2024: 108.1°F
- Forecasted heat index maximum for July 20, 2024: 106.9°F
- Forecasted heat index maximum for July 21, 2024: 105.5°F
- Total population: 950,203
10. Tampa, FL
- Forecasted heat index maximum for July 19, 2024: 106.9°F
- Forecasted heat index maximum for July 20, 2024: 108.5°F
- Forecasted heat index maximum for July 21, 2024: 107.8°F
- Total population: 388,768
9. Orlando, FL
- Forecasted heat index maximum for July 19, 2024: 109.1°F
- Forecasted heat index maximum for July 20, 2024: 109.1°F
- Forecasted heat index maximum for July 21, 2024: 107.1°F
- Total population: 307,738
8. Scottsdale, AZ
Arizona Canal running through Scottsdale,Az,USA at sunset
- Forecasted heat index maximum for July 19, 2024: 109.1°F
- Forecasted heat index maximum for July 20, 2024: 111.0°F
- Forecasted heat index maximum for July 21, 2024: 108.3°F
- Total population: 240,537
7. Peoria, AZ
- Forecasted heat index maximum for July 19, 2024: 109.2°F
- Forecasted heat index maximum for July 20, 2024: 111.2°F
- Forecasted heat index maximum for July 21, 2024: 108.4°F
- Total population: 191,292
6. Phoenix, AZ
- Forecasted heat index maximum for July 19, 2024: 111.2°F
- Forecasted heat index maximum for July 20, 2024: 113.1°F
- Forecasted heat index maximum for July 21, 2024: 110.8°F
- Total population: 1,609,456
5. Mesa, AZ
- Forecasted heat index maximum for July 19, 2024: 111.3°F
- Forecasted heat index maximum for July 20, 2024: 113.0°F
- Forecasted heat index maximum for July 21, 2024: 111.1°F
- Total population: 503,390
4. Gilbert, AZ
- Forecasted heat index maximum for July 19, 2024: 111.4°F
- Forecasted heat index maximum for July 20, 2024: 113.0°F
- Forecasted heat index maximum for July 21, 2024: 111.3°F
- Total population: 267,267
3. Glendale, AZ
- Forecasted heat index maximum for July 19, 2024: 111.9°F
- Forecasted heat index maximum for July 20, 2024: 113.8°F
- Forecasted heat index maximum for July 21, 2024: 111.6°F
- Total population: 248,083
2. Chandler, AZ
- Forecasted heat index maximum for July 19, 2024: 112.0°F
- Forecasted heat index maximum for July 20, 2024: 113.6°F
- Forecasted heat index maximum for July 21, 2024: 112.3°F
- Total population: 275,618
1. Tempe, AZ
- Forecasted heat index maximum for July 19, 2024: 112.1°F
- Forecasted heat index maximum for July 20, 2024: 113.9°F
- Forecasted heat index maximum for July 21, 2024: 112.1°F
- Total population: 181,005