This study captures for 6 days in May and August 2022 (time interval 8:00 AM-8:00 PM) the atmospheric levels of positive and negative ions in the atmosphere of three balneoclimatic resorts in north-eastern Romania (Solca, Cacica and Gura Humorului), in correlation with the values of meteorological elements of those days. The concentration of aeroions was measured hourly, in 2+2 days, in a characteristic point of each resort and on September 15, 2022 in 3 points / levels of Cacica salt mine. With average values of aeroion levels above 1000 / cc (1054 / cc at Solca, 1069 / cc at Gura Humorului and 1468 / cc at Cacica) the atmosphere of these resorts can be therapeutically exploited by aeroionotherapy. In the Cacica salt mine the aeroelectric potential is very high, here the total aeroion load varied between 9,026.5 and 11,464.5 aeroions/cc. The unipolarity coefficient (k) had average values of 0.72 at Solca, 0.9 at Cacica and 0.97 at Gura Humorului, indicating in all three resorts a quality air with therapeutic properties. In the Cacica salt mine the average value of the unipolarity coefficient was 1.26, with slight variations from one room to another.