7
Very High
Extreme Heat Risk in San Antonio, TX
Risk Level: Very High — Score 7/10
FEMA: 7Historical: 8
Key Risk Factors
- FEMA rates San Antonio's county as Relatively High risk
- Estimated annual loss of $39M from this hazard type
- 2 events on record in proximity
- 1 event(s) in the last 12 months
- Average annual frequency: 10.3 events per year
Peak season: June-September
Last significant event: Extreme Heat - Southwest Texas, United States (2025-05-13) — 749,000 people exposed
Highest Risk Cities for Extreme Heats
San Antonio is not in the top 10 for extreme heat risk among tracked cities.
How San Antonio Compares
Loading chart...
Notable Extreme Heat Events Near San Antonio
Extreme Heat - Southwest Texas, United States
May 12, 2025 — WARNING
749,000 people exposed; $96,292M capital exposed
Extreme Heat - Southern and Central Texas, United States
June 18, 2019 — WARNING
Impact data not available
Extreme Heat Preparedness Tips
- 1.Stay hydrated — drink water regularly even if you don’t feel thirsty
- 2.Avoid outdoor activities during peak heat hours (10 AM – 4 PM)
- 3.Know the signs of heat exhaustion and heat stroke
- 4.Check on elderly neighbors and those without air conditioning
- 5.Never leave children or pets in a parked vehicle
Related Pages
Earthquake Risk in San Antonio
Score: 3/10
Wildfire Risk in San Antonio
Score: 5/10
Hurricane Risk in San Antonio
Score: 5/10
Flood Risk in San Antonio
Score: 9/10
Tornado Risk in San Antonio
Score: 9/10
Winter Storm Risk in San Antonio
Score: 7/10
Landslide Risk in San Antonio
Score: 3/10
Drought Risk in San Antonio
Score: 5/10
High Wind Risk in San Antonio
Score: 7/10
Tsunami Risk in San Antonio
Score: 0/10
Extreme Heat Risk in Austin, TX
Score: 7/10
Extreme Heat Risk in Houston, TX
Score: 9/10
Extreme Heat Risk in Fort Worth, TX
Score: 7/10
Monitor Extreme Heat Risk in Real Time
Get real-time extreme heat alerts for San Antonio, TX and hundreds of other locations with DisasterAWARE's enterprise platform.
Learn More About DisasterAWARE