Subject	Social Sciences
Specific subject area	Health psychology, Perceived air pollution
Type of data	Primary data, Table
How data were acquired	The data were collected by an online survey hosted on two platforms: Google Forms (English, Italian, Norwegian, Persian, Portuguese versions) and WenJuanXing (Chinese version). An English copy is available in the data repository. The survey was distributed by means of professional and social networks
Data format	Raw Analyzed
Parameters for data collection	The survey data were obtained from 9 394 respondents older than 18 years old having internet access
Description of data collection	The online survey was distributed using a combination of purposive and snowball techniques
Data source location	Countries: Australia, Brazil, China, Ghana, India, Iran, Italy, Norway, South Africa and the United States
Data accessibility	Dataset is uploaded on Mendeley Data Repository name: Perceived air pollution in Australia, Brazil, China, Ghana, India, Iran, Italy, Norway, South Africa, USA before and during COVID-19 restrictions Data identification number: DOI: 10.17632/fb38h4tyzn.2 Direct URL to data: https://data.mendeley.com/datasets/fb38h4tyzn/2