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Methodology:
To determine the major cities where it is going to feel over 100 degrees this weekend, 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. Only cities with at least 10,000 residents where at least 40% of residents are 65 years and over were considered. Population data is from the Census Bureau's American Community Survey and are five-year estimates for 2022.
30. Green Valley, AZ
- Forecasted heat index maximum for July 19, 2024: 100.3°F
- Forecasted heat index maximum for July 20, 2024: 101.1°F
- Forecasted heat index maximum for July 21, 2024: 101.0°F
- Population 65 years and over: 80.5%
- Total population: 20,937
29. Marco Island, FL
- Forecasted heat index maximum for July 19, 2024: 102.8°F
- Forecasted heat index maximum for July 20, 2024: 104.9°F
- Forecasted heat index maximum for July 21, 2024: 103.7°F
- Population 65 years and over: 58.6%
- Total population: 15,942
28. West Vero Corridor, FL
- Forecasted heat index maximum for July 19, 2024: 105.4°F
- Forecasted heat index maximum for July 20, 2024: 105.0°F
- Forecasted heat index maximum for July 21, 2024: 103.1°F
- Population 65 years and over: 52.8%
- Total population: 10,315
27. Mesquite, NV
- Forecasted heat index maximum for July 19, 2024: 103.5°F
- Forecasted heat index maximum for July 20, 2024: 105.1°F
- Forecasted heat index maximum for July 21, 2024: 105.7°F
- Population 65 years and over: 44.8%
- Total population: 20,659
26. Hudson, FL
- Forecasted heat index maximum for July 19, 2024: 105.1°F
- Forecasted heat index maximum for July 20, 2024: 106.8°F
- Forecasted heat index maximum for July 21, 2024: 106.4°F
- Population 65 years and over: 45.5%
- Total population: 10,821
25. Iona, FL
- Forecasted heat index maximum for July 19, 2024: 105.4°F
- Forecasted heat index maximum for July 20, 2024: 106.7°F
- Forecasted heat index maximum for July 21, 2024: 106.7°F
- Population 65 years and over: 59.1%
- Total population: 14,295
24. Cypress Lake, FL
- Forecasted heat index maximum for July 19, 2024: 105.7°F
- Forecasted heat index maximum for July 20, 2024: 106.9°F
- Forecasted heat index maximum for July 21, 2024: 106.8°F
- Population 65 years and over: 42.7%
- Total population: 12,313
23. Punta Gorda, FL
- Forecasted heat index maximum for July 19, 2024: 106.4°F
- Forecasted heat index maximum for July 20, 2024: 107.0°F
- Forecasted heat index maximum for July 21, 2024: 106.9°F
- Population 65 years and over: 52.5%
- Total population: 19,605
22. North Fort Myers, FL
- Forecasted heat index maximum for July 19, 2024: 106.6°F
- Forecasted heat index maximum for July 20, 2024: 107.2°F
- Forecasted heat index maximum for July 21, 2024: 106.6°F
- Population 65 years and over: 47.9%
- Total population: 42,492
21. Naples, FL
- Forecasted heat index maximum for July 19, 2024: 106.0°F
- Forecasted heat index maximum for July 20, 2024: 107.7°F
- Forecasted heat index maximum for July 21, 2024: 106.9°F
- Population 65 years and over: 54.6%
- Total population: 19,315
20. Rotonda, FL
- Forecasted heat index maximum for July 19, 2024: 106.3°F
- Forecasted heat index maximum for July 20, 2024: 107.3°F
- Forecasted heat index maximum for July 21, 2024: 107.8°F
- Population 65 years and over: 57.5%
- Total population: 10,233
19. Rancho Mirage, CA
- Forecasted heat index maximum for July 19, 2024: 106.4°F
- Forecasted heat index maximum for July 20, 2024: 107.7°F
- Forecasted heat index maximum for July 21, 2024: 108.1°F
- Population 65 years and over: 49.9%
- Total population: 17,257
18. Bonita Springs, FL
- Forecasted heat index maximum for July 19, 2024: 106.8°F
- Forecasted heat index maximum for July 20, 2024: 108.2°F
- Forecasted heat index maximum for July 21, 2024: 107.5°F
- Population 65 years and over: 41.3%
- Total population: 53,945
17. Estero, FL
- Forecasted heat index maximum for July 19, 2024: 107.0°F
- Forecasted heat index maximum for July 20, 2024: 108.3°F
- Forecasted heat index maximum for July 21, 2024: 107.6°F
- Population 65 years and over: 50.6%
- Total population: 36,685
16. Sun City Center, FL
- Forecasted heat index maximum for July 19, 2024: 107.3°F
- Forecasted heat index maximum for July 20, 2024: 108.9°F
- Forecasted heat index maximum for July 21, 2024: 108.0°F
- Population 65 years and over: 66.9%
- Total population: 29,290
15. Englewood, FL
- Forecasted heat index maximum for July 19, 2024: 107.6°F
- Forecasted heat index maximum for July 20, 2024: 108.6°F
- Forecasted heat index maximum for July 21, 2024: 108.7°F
- Population 65 years and over: 58.2%
- Total population: 19,378
14. Gold Canyon, AZ
- Forecasted heat index maximum for July 19, 2024: 108.3°F
- Forecasted heat index maximum for July 20, 2024: 109.9°F
- Forecasted heat index maximum for July 21, 2024: 107.9°F
- Population 65 years and over: 54.9%
- Total population: 11,565
13. On Top of the World, FL
- Forecasted heat index maximum for July 19, 2024: 108.6°F
- Forecasted heat index maximum for July 20, 2024: 109.5°F
- Forecasted heat index maximum for July 21, 2024: 108.9°F
- Population 65 years and over: 85.2%
- Total population: 13,056
12. Liberty Triangle, FL
- Forecasted heat index maximum for July 19, 2024: 108.7°F
- Forecasted heat index maximum for July 20, 2024: 109.5°F
- Forecasted heat index maximum for July 21, 2024: 108.9°F
- Population 65 years and over: 43.0%
- Total population: 23,112
11. Pine Ridge, FL
- Forecasted heat index maximum for July 19, 2024: 108.4°F
- Forecasted heat index maximum for July 20, 2024: 109.6°F
- Forecasted heat index maximum for July 21, 2024: 109.5°F
- Population 65 years and over: 50.0%
- Total population: 10,269
10. Sugarmill Woods, FL
- Forecasted heat index maximum for July 19, 2024: 108.5°F
- Forecasted heat index maximum for July 20, 2024: 110.0°F
- Forecasted heat index maximum for July 21, 2024: 109.4°F
- Population 65 years and over: 49.5%
- Total population: 10,821
9. Venice, FL
- Forecasted heat index maximum for July 19, 2024: 108.6°F
- Forecasted heat index maximum for July 20, 2024: 109.9°F
- Forecasted heat index maximum for July 21, 2024: 110.0°F
- Population 65 years and over: 61.2%
- Total population: 25,710
8. The Villages, FL
- Forecasted heat index maximum for July 19, 2024: 109.6°F
- Forecasted heat index maximum for July 20, 2024: 110.4°F
- Forecasted heat index maximum for July 21, 2024: 108.8°F
- Population 65 years and over: 85.9%
- Total population: 79,108
7. Lady Lake, FL
- Forecasted heat index maximum for July 19, 2024: 109.9°F
- Forecasted heat index maximum for July 20, 2024: 110.6°F
- Forecasted heat index maximum for July 21, 2024: 108.6°F
- Population 65 years and over: 50.9%
- Total population: 16,047
6. Laurel, FL
- Forecasted heat index maximum for July 19, 2024: 109.2°F
- Forecasted heat index maximum for July 20, 2024: 110.5°F
- Forecasted heat index maximum for July 21, 2024: 110.3°F
- Population 65 years and over: 44.7%
- Total population: 11,858
5. Palmer Ranch, FL
- Forecasted heat index maximum for July 19, 2024: 109.5°F
- Forecasted heat index maximum for July 20, 2024: 110.8°F
- Forecasted heat index maximum for July 21, 2024: 110.5°F
- Population 65 years and over: 52.0%
- Total population: 15,278
4. Sun City West, AZ
- Forecasted heat index maximum for July 19, 2024: 111.3°F
- Forecasted heat index maximum for July 20, 2024: 113.1°F
- Forecasted heat index maximum for July 21, 2024: 110.6°F
- Population 65 years and over: 86.4%
- Total population: 26,639
3. Sun City, AZ
- Forecasted heat index maximum for July 19, 2024: 111.8°F
- Forecasted heat index maximum for July 20, 2024: 113.7°F
- Forecasted heat index maximum for July 21, 2024: 111.5°F
- Population 65 years and over: 75.4%
- Total population: 37,748
2. Sun Lakes, AZ
- Forecasted heat index maximum for July 19, 2024: 112.1°F
- Forecasted heat index maximum for July 20, 2024: 113.7°F
- Forecasted heat index maximum for July 21, 2024: 112.5°F
- Population 65 years and over: 78.5%
- Total population: 14,147
1. Fortuna Foothills, AZ
- Forecasted heat index maximum for July 19, 2024: 114.7°F
- Forecasted heat index maximum for July 20, 2024: 116.3°F
- Forecasted heat index maximum for July 21, 2024: 116.2°F
- Population 65 years and over: 46.1%
- Total population: 27,552