AbstractOLLEROVÁ, Viera: Global warming and its extreme exposals in forest exosystems of the 3. and 5. forest altitudinal zones. (Bachelor Thesis) / Viera Ollerová - Technical University of Zvolen. Faculty of forestry, Department of natural environment. – Supervisor: doc. Ing. Katarína Střelcová PhD. Degree of professional qualification: bachelor.Zvolen: LF, TUZVO, 2019. 49 pp.This work is focused on observing of selected exposals of Global warming in forest ecosystems of the 3. and 5. forest altitudinal zones. I make out plan charts of climatic stations of the period of five years from 2013 to 2017 in meteorologic stations Prievidza, which is situated in the 3. altitudinal zone, and Telgárt which belongs to the 5. altitudinal zone. We aimed to process measured characteristics such as average temperature, precipitation total, percentage of long-term average of the years 1951 – 1980, precentage of normal of the years 1961 – 1990, deviation of long-term average, deviation of normal, sunshine, maximal snow cover and maximal and minimal temperature of months of year. All of the data we borrow from the website of SHMÚ.Key words: Global warming, Climate change, Overview of climatic indicators for the period of 2013-2017 in meteorologic stations Prievidza and Telgárt.