SAN ANTONIO - The National Weather Service said it wants the public to know the difference between signs of heat exhaustion and heat stroke.
For example, NWS San Antonio said you might feel "faint or dizzy" of you are experiencing heat exhaustion, vs. having a throbbing headache during a heat stroke.
Victims of both conditions might experience nausea or vomiting.
Here is something good to know today when Heat Index values are expected to range from 105-109 across much of the area. pic.twitter.com/yCRN2hdaD4— NWS San Antonio (@NWSSanAntonio) June 16, 2017
However, a weak pulse could be a sign of heat exhaustion, while a "rapid, strong pulse" is a sign of heat stroke.
NWS said it encourages people to learn the warning signs so you can stay safe in the summer heat.