This dataset contains measurements of airborne particle concentrations and environmental conditions collected in clinical settings, including dental clinics and hospitals. Data were recorded using a GRIMM 1.109 (Grimm Technologies, Inc., Douglasville, GA, USA) aerosol spectrometer and TSI Q-Trak Indoor Air Quality (IAQ) Monitor (TSI Incorporated, Shoreview, MN, USA) (Appendix E) to assess indoor air quality and bioaerosol exposure. This dataset can be used to evaluate indoor air quality, particle exposure levels, and environmental conditions in healthcare environments.