Sun exposure makes it feel hotter than the shaded air temperature because your body absorbs infrared radiation from the sun.

Explaining what the difference between air temperatures and heat index temperatures.

A throbbing headache is another common sign of heat stroke, per the Mayo Clinic. This symptom is typically due to dehydration ...

Once you know the difference between heat exhaustion and heat stroke, you'll be able to properly treat both. Stay prepared with these tips.

Heat stroke vs. heat exhaustion Heat stroke is one of the most serious heat-related illnesses, according to the CDC, and it could be deadly if left ignored.

Having a body temperature above 104 degrees is also a sign of heat stroke. According to the CDC, heat stroke can be fatal if treatment is delayed.

Heat exhaustion and heat stroke are both heat-related illnesses, but heat stroke is significantly more serious and potentially life-threatening.

Between heat exhaustion and heat stroke, heat exhaustion is the less serious of the two. Dizziness, extreme thirst, heavy sweating, nausea and weakness are signs.