Protect the elderly from the heat
The effects of heat are mainly felt by older people, because their thermoregulation mechanism may not be effective and could be altered.
Take care of the elderly around you. If you have elderly relatives, neighbours or acquaintances who may be lonely these days, call them on the phone or come and visit them. Make sure they are well and perfectly hydrated.
Make sure they keep their medicines correctly, especially those that should be in the fridge for better preservation.