This study is the first attempt to decipher the effect of particulate matter (PM) composition on people’s health and on historic sites. in correlation with the daily and seasonal microclimate monitoring of the indoor and outdoor areas of the Roman Mosaic Edifice museum (the maritime port of Constanta. Romania). More specifically. https://www.alarecre.com/Virescent-Harmony-Galaxy-A14-5G-Clear-Case-p106336/