Extreme heat or heatwaves are a period of unusually hot weather that cause people to become ill from heat-stress or heatstroke – which can be fatal.

Heatwaves can affect everyone, however those most at risk are older people, young children, pregnant women, outdoor workers and people with a medical condition.

Heatwaves kill more people annually in the U.S and Australia than bushfires, hurricanes, lightning, tornadoes, floods, and earthquakes combined.

Symptoms of extreme heat
Heatwaves: Who is at risk?
In a heatwave, the risk of heart-related illnesses increase:
The risk of heat-related illness increases for:
Babies and children are especially at risk from dehydration. Keep them safe by encouraging children to drink plenty of water. Watch for dark urine and check the frequency of nappy changes.
How to Stay Cool in a Heat Wave

In a heat wave - how can I get a good night's sleep?

Use thin sheets, cool your socks in the fridge before putting them on and stick to your usual bedtime routine, experts say.
How to prepare for a heatwave
Get organised with these straightforward ideas and tips. Before it heats up get prepared:
Prepare for a power failure
Power failures can happen during times of extremely hot weather. Some things you can do to prepare for a power failure are:
How you can help others
In extreme heat, check on and help other people who may be at a higher risk of heat-related illness: