Children are particularly sensitive to high temperatures because they can't transfer heat well, so it's important to keep them cool and hydrated. Never leave children in parked cars.

As we age, we may not sweat effectively to keep our bodies cool. We may not feel as thirsty, so it's easier to become dehydrated. Some older adults may not notice excessive heat, so may not take the appropriate precautions. 

Take extra precautions, as increases in core body temperature have the potential to negatively affect a fetus, especially during the first trimester.

You're more likely to get dehydrated and get heat-related illnesses when you're outside. Cool down by taking breaks in the shade whenever possible. 

Find or borrow fans to help with stagnant air. At night, use fans to blow hot air out of your home. 

In cities, heat is trapped by tall buildings and can cause hotter temperatures, especially in neighborhoods that have less greenery to provide cooling.

If you have a physical or developmental disability,  it may be difficult to safely access public cooling centers or to take advantage of other services. Contact friends or family members, or government officials running your local cooling center to identify transportation options.

Certain medications can make it hard for you to cope with heat. You may not be able to sweat enough or cool down properly. Take extra precautions and monitor your body temperature regularly.