Dementia is a syndrome where the memory deteriorates, thinking changes, behaviour changes, etc. It can get developed from Alzheimer's disease and mainly affects elderly people. The fine particulate matter present in the air can increase the risk of cardiovascular problems which can lead to dementia. The main aim of this research is to understand the knowledge and awareness of people on the topic of air pollution linked to dementia. A survey was designed to analyse the result. The questionnaire was prepared in Google Forms- website and was distributed to 100 participants. The questionnaire was based on dementia and air pollution and its relation. The data was then collected and statistically analysed using SPSS software. 71% of the participants were aware that both air pollution and dementia are increasing factors of global risk. And only 77% of the participants were aware of the term ‘dementia’.Awareness must be spread on dementia and its link with air pollution, especially among elderly people. Awareness must be created on a larger scale of population, and also the public's opinion on dementia and its link with air pollution must be known for further future studies.