After collecting your data and uploading to a computer, your graph should look something like this. This measurement was taken on March 12, 2025. Since the air quality remained good during trial, PM2.5 concentration levels remained close to baseline.

Measurements of high PM2.5 concentrations aren't frequent, so your graphs may not be as visible. To get a better look, you could export to a spreadsheet by pressing the icon on the left and graph.