Monitoring at six locations for samples of Total Suspended Particulate (TSP) ambient air around Pacitan Coal Steam Power Plant has been carried out. The purpose of this research is to characterize TSP and identify radioactivity around Pacitan Coal Steam Power Plant. The characteristics of TSP are determined by weighing before and after the weight of the TSP filter on the air pumping process at a constant, continuous speed for 24 hours. The Total Suspended Particulate (TSP) level around Pacitan Coal Steam Power Plant has the smallest value of 41.0 µg/m3 and the highest with a value of 67.9 µg/m3 resulting in an average value of 49.2±9.9 µg/m3. This average is still below the WHO air quality guidelines of 250 µg/m3. The radioactivity content of natural radionuclide air particulates including Th-232, Ra-226, Ra-228 and K-40 at 6 air sampling locations was determined using gamma spectrometers with HPGe detectors. The average activity concentration of Th-232, Ra-226, Ra-228 and K-40 in the TSP air particulate matter sample was 10.5; 14,0; 17,6; and 82.7 µBq/m3. The concentration value of radioactivity is still below the recommended value by Head Regulations of Nuclear Energy Regulatory Agency No. 7 in 2017 about the raw value of radioactivity levels in the air (Ra-226 with a value of 1800 µBq/m3 and Th-232 with a value of 2300 µBq/m3). From the results of TSP level analysis and radioactivity characteristics, air quality in the environment around Pacitan Power Plant is still safe for the people.