🌡️
Understand the heat
See how humidity changes how hot the air feels with our interactive heat-index calculator.
Made for Texas communities
Hot days.
Smarter choices.
Extreme heat can be dangerous. Get a clearer picture of heat risk, learn how to protect yourself, and discover trusted places to look for local cooling resources.
Why HeatSafe?
One website. More peace of mind.
We make essential heat-safety information simple, understandable, and accessible to everyone.
📍
Find local help
Access official resources for finding cooling options and heat assistance in your community.
💧
Stay prepared
Learn practical precautions and recognize the warning signs of heat-related illness.
Interactive tool
How hot does it really feel?
Adjust the temperature and humidity to estimate the heat index. This is a demonstration tool, not a live weather forecast.
Today's scenario
Try changing both sliders to see how humidity affects the heat index.
Estimated heat index
105°F
Danger
High heat can increase the risk of heat illness. Take precautions.
Based on the NOAA/National Weather Service heat-index approximation. The index is calculated for shade and light wind; direct sun can make conditions feel hotter. Heat index alone cannot determine an individual's medical risk.
Community connections
Find a place to cool down.
Cooling centers can open temporarily during extreme weather. Use these official sources to check current information before traveling.
🏙️
City of Austin
Check the city's official website for heat alerts, public facilities, and emergency cooling announcements.
Official city website ↗
📚
Austin Public Library
Find library branches and confirm their current operating hours. A library is not automatically an emergency cooling center.
Find a library ↗
🗺️
2-1-1 Texas
Search for community support services and local assistance resources. Call 2-1-1 where available.
Explore resources ↗
⚠️ These links are resource directories,
not a verified list of open cooling centers.
Always confirm availability, eligibility,
hours, and transportation before heading out.
Heat safety guide
Small actions. Big protection.
Simple precautions can help reduce the risk of heat-related illness.
💧
Drink water regularly
Stay hydrated throughout the day, especially during physical activity. Follow any fluid restrictions given by your clinician.
🌳
Take cooling breaks
Rest in shade or air-conditioned spaces and reduce strenuous activity during the hottest hours.
👕
Dress for the weather
Wear lightweight, loose-fitting clothing and use sun protection when outdoors.
🤝
Check on others
Older adults, young children, outdoor workers, and people with certain health conditions may need extra support.
🚨 Know the warning signs.
Heat exhaustion may cause heavy sweating,
weakness, dizziness, or nausea.
Move to a cooler place and seek medical
advice if symptoms worsen or do not improve.
Confusion, fainting, seizures, or very
high body temperature may signal
heatstroke: call 911 immediately.
Begin cooling the person while waiting
for help.