Staying outdoors and physical activity are important for the proper growth and development of a child. In the preschool age, it is especially important to enable the child physical activity outdoors, because this is the time of the most intensive growth. As children are less and less active these days and spend more and more time indoors, educators and parents need to understand the importance and many benefits that physical activity brings. The aim of this study was to find out how much time preschool children spend outside and how much physically active they are and whether there are any differences compared to previous generations. The theoretical part of the paper discusses the developmental characteristics of children, types of physical activities, the importance of being in nature and physical activities in it and the possible reasons for their reduction. The second part of the paper presents a study in which 96 parents/ guardians and educators participated. In order to determine how physically active preschool children are and how much time they spend outdoors, a 22-question survey was designed that was conducted online. The results of the survey are presented qualitatively and quantitatively and are processed in the program in which the survey was made. Research shows that today children spend significantly less time outside than their parents and educators did. There is also a difference in the choice of toys and games and the places where children go. The results also show that parents are aware of the importance of outdoor physical activity and encourage their children to spend as much time as possible in it. They also believe that children are less physically active today. Since the results confirm this, and the benefits of physical activity and being outdoors are numerous, it is important to make parents and those who work with children aware of its importance, and to give children the opportunity to play outdoors as often as possible.