Indoor air quality is one of the most importatnt factors of indoor enviorment, hence the need for correct planing of indoor spaces. Bad air quality has a lot of negative influences on people in spaces, both long term or short term effects. For appropriat air quality, appropriate air condtitioning needs to be achieved, however my meassured data indicates at inappropriate air conditioning and air quality. With meassuring humidity, CO2 and temperature I was able to determine air quality and indoor enviorment. The results are alarming to say the least and indicate that a new ventilation is needed. Also a comparison between american ASHRAE 62.1-2016 standard and european SIST EN 15251-2007 standard was made.