San Antonio, TX

Top Climate Change Risks:

Drought, Heat, Precipitation

Risk Snapshot

Climate Change Hazard Ratings for San Antonio, TX

Ratings represent risk relative to the continuous United States. 100 is the highest risk for the hazard and 1 is the lowest for the U.S., but does not indicate no risk. Flood and fire are rated based on the buildings in San Antonio exposed to these hazards. See hazard sections below and check your address for details.

People in San Antonio, TX are especially likely to experience increased risks from drought, heat, and precipitation.

Drought risk in San Antonio, TX is extreme. Heat risk is very high. Precipitation risk is high. About 68% of buildings in San Antonio, TX are at risk of wildfire, and the risk level for these buildings is significant. About 20% of buildings in San Antonio, TX are at risk of flooding, and the risk level for these buildings is significant.

Fire and flood risk can vary significantly for individual properties within a city. Check your address for detailed heat, storm, fire, drought, and flood risk through 2050.

Drought risk in San Antonio, TX

The Upper San Antonio watershed, which contains San Antonio, TX, has experienced 701 weeks (62% of weeks) since 2000 with some of its area in drought of any level, and 184 weeks (16% of weeks) since 2000 with some of its area in Extreme or Exceptional drought. Source: National Drought Monitor.

Climate change is increasing the risk of drought. Water stress (the ratio of water demand to supply) depends on how water utilities source water and their plans to adapt to climate change. Property owners can also take steps to reduce their risks from drought.

Heat risk in San Antonio, TX

The number of the hottest days in San Antonio is projected to keep increasing.

In a typical year between 1985-2005, people in San Antonio, TX experienced about 8.0 days above 100.8ºF in a year. By 2050, people in San Antonio are projected to experience an average of about 49.0 days per year over 100.8ºF.

Climate change is increasing the frequency and intensity of heat waves, even in places with cooler average temperatures. See more information on heat risk. Everyone can take steps to reduce their risks from extreme heat.

Precipitation risk in San Antonio, TX

The amount of precipitation during the most extreme days in San Antonio is projected to increase.

An extreme storm for San Antonio, TX is a 48-hour rainfall total greater than 0.8 inches. Historically, about 15.0" of rain (or the equivalent in snow) fell over about 10 storms each year. By 2050, about 15.6" of rain are projected over about 11 storms each year. The annual precipitation in San Antonio, TX is projected to remain about the same, 29.9".

Extreme precipitation in any form can pose significant risks. Climate change increases the potential for extreme rainfall or snowfall because warmer air can hold more water vapor. See more information on storm risk. Property owners can take steps to reduce their risks from extreme precipitation.

Fire risk in San Antonio, TX

Of 567 census tracts in San Antonio, TX, there are 460 where more than a quarter of buildings have significant fire risk, and 359 where more than half of buildings have significant fire risk. Property owners can take steps to mitigate their risks from wildfires.

Fire risk) depends on proximity to vegation: densely developed urban areas have a much lower risk of burning than areas adjacent to wildland. Climate change increases risks from wildfire by creating hotter, drier conditions for fires to spread. ClimateCheck ratings of fire risk are based on projected weather conditions and U.S. Forest Service models simulating fire behavior.

Flood risk in San Antonio, TX

Of 567 census tracts in San Antonio, TX, there are 62 where more than half of buildings have significant risk from surface flooding, or riverine flooding.Property owners can check a specific address for flood risk including FEMA flood zone, then take steps to reduce their vulnerability to flooding damage.

Climate change is increasing inland and coastal flooding risk due to sea level rise and increasing chances of extreme precipitation. See more information on flooding risk.

How can we prevent and adapt to climate change?

Mitigating climate change—by eliminating our emissions into the atmosphere and reducing our strain on the environment—and adapting to our changing planet are both vital to our well-being.

Understand Risks

Check your address and get a free report describing risks to your property and in your area.

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Protect Homes and Communities

Check our free report for tips on protecting your home from hazards.

Green infrastructure is a category of nature-based solutions for increasing precipitation. Find resources for individuals and municipalities through the EPA's Soak Up the Rain initiative.

Planting trees and vegetation helps reduce extreme heat in urban environments. Cool Pavements can also help urban heat islands. Search the Heat Island Community Actions Database to see what some municipalities have been doing to reduce extreme heat risk.

Read more about building resilience for communies: U.S. Climate Resilience Toolkit.

Use the Common Cause tool to find your representatives (federal to local), how to contact them, and information about political contributions and bills they have introduced.

Find Balance

Reducing emissions is necessary–and possible–across the globe and in every part of our society. Learn more with Project Drawdown's introduction to climate solutions.

Estimate your home's carbon footprint with the CoolClimate Calculator. Or, estimate the carbon footprint of your business.