National Heat Awareness Day - May
Fri, May 31, 2024

National Heat Awareness Day

National Heat Awareness Day is an American holiday created to raise awareness of the negative effects of heat on the human body. It is celebrated annually on the last Friday of May.


The history of National Heat Awareness Day begins with an initiative of OSHA and the American Weather Service. There is no information about the first date of the celebration. The creators of the holiday wanted to draw people’s attention to the problem of heat, which can be seriously dangerous if ignored.

Every year the temperature rises. In the U.S. climate, high temperatures are not surprising, especially in states far from the ocean. The prolonged droughts, when the thermometer is safely above +45ºC, create really dangerous conditions for people who have been outdoors for a long time.

Physical labor under such conditions is especially dangerous. Hot weather threatens heat stroke, dehydration, and heat exhaustion. In the presence of chronic heart and vascular disease, there is a high probability of fainting or even death.

Interesting facts

  • In hot weather, it is recommended to consume 2.5-3 liters of clean water per day, especially if you are outdoors a lot.
  • The midday sun is the hottest, so it is better to exclude a long stay outside during this period.
  • Global warming is one of the urgent problems of mankind, which must be solved. It is associated with an increase in emissions of harmful substances, including carbon dioxide, into the environment.

How to celebrate

Learn safety precautions for being in hot weather. Learn first aid sequences for heat stroke, fainting, and dehydration. If you are outdoors a lot, remember to wear hats, sunscreen, and drink enough water. Reduce your intake of carbonated sugary drinks, as they only increase the feeling of thirst.

Tell about the holiday on social networks. Ask users how they save themselves in the heat?

When is National Heat Awareness Day celebrated in 2024?

National Heat Awareness Day is observed on the last Friday of May.


Weekday Month Day Year
Friday May 31 2024
Friday May 30 2025