This work describes the in-situ aerosol measurements at the Arctic Sammaltunturi measurement station in Pallas in northern Finland. This data paper, describes the instruments and the data post processing of key aerosol particle measurements that are relevant for cloud properties. Data reported here are part of the Pallas Cloud Experiment in 2022 (PaCE2022). The in-situ measurements described in this paper and are complementary to the research related to the PaCE 2022 campaign that investigates aerosol and cloud properties such as transects and profiles obtained from balloons, drones, and remote sensing techniques. All data from the campaign resides in a campaign dedicated data repository for easy access and overview. In addition, this data paper will also act as a future reference on how aerosol measurements are conducted and post-processed at the site for future publications. The data set is available at PaCE 2022 campaign data repository at <a href="https://zenodo.org/communities/pace2022/" target="_blank" rel="noopener">https://zenodo.org/communities/pace2022/</a> (last access: May 7, 2025). The data described here is available at <a href="https://doi.org/10.5281/zenodo.14900651" target="_blank" rel="noopener">https://doi.org/10.5281/zenodo.14900651</a> (last access: May 7, 2025) (Backman et al., 2025).