With temperatures still soaring across North Devon, the whole South West is under the heatwave action warning. People are advised to stay out of the sun and keep their home as cool as possible. A Met Office spokesman said: Temperatures should fall slightly during Tuesday by both day and night for most, curtailing this alert. While temperatures are expected to pare back slightly by both night and day through the middle of the week, later in the week the easterly breeze that has been providing some relief in eastern counties is expected to die away, leading to a notable change in the feel of temperatures here, even if absolute thresholds are not quite breached. READ MORE: 12 stunning photos of North Devon which will make you want to drive to the beach right nowThe level three warning means there is a 90 per cent chance of a heatwave, and Public Health England (PHE) is again taking the chance to remind people to look after themselves and others who may be at risk. When temperatures climb to the sorts of levels seen in many parts of the country some people can struggle to cope. The over 65s, young children and those with heart and lung conditions can all find normal activities a strain when temperatures get this high. Mike Wade, deputy director of Health Protection for PHE South West said: We know that at this time of year, many people will come to the South West to enjoy the coast, the scenery and outdoor activities that are offered, and enjoy the good weather. READ MORE: Fire and health warnings as North Devon basks in heatwaveBut we know that when weather like this hits, for some people, temperatures like these, over more than a day or two, can be really uncomfortable and pose a significant risk to health. This is because their bodies may struggle to adapt to working harder, as all our bodies do when the weather gets this hot, and they can become ill. Its vitally important that we keep an eye on friends, family and neighbours who may be at risk. For others, the best thing to do is avoid the sun during the hottest parts of the day, carry water with you when travelling and if going out to large events, and we know lots of people will be watching football this week, think what you can do stay cool. Its also worth remembering to think about keeping homes cool as this can aid sleeping at night and give the body time to recover from the heat of the day.