SURVEY DATA REGARDING PERCEIVED AIR QUALITY IN AUSTRALIA, BRAZIL, CHINA, GHANA, INDIA, IRAN, ITALY, NORWAY, SOUTH AFRICA, UNITED STATES BEFORE AND DURING COVID-19 RESTRICTIONS

Abstract The dataset deals with the air quality perceived by citizens before and during the enforcement of COVID-19 restrictions in ten countries around the world: Australia, Brazil, China, Ghana, Italy, India, Iran, Norway, South Africa and the United States. An online survey conveniently translated into Chinese, English, Italian, Norwegian, Persian, Portuguese has collected information regarding the perceived quantity of air pollution according to a Likert scale. The questionnaire has been distributed between 11-05-2020 and 31-05-2020 and 9 394 respondents have taken part. Both the survey and the dataset (stored in a Microsoft Excel Worksheet) are available in a public repository. The collected data offer the people's subjective perspectives related to the objective improvement in air quality occurred during the COVID-19 restrictions. Furthermore, the dataset can be used for research studies involving the reduction in air pollution as experienced, to a different extent, by populations of all the ten countries.