QUALITY ASSESSMENT OF INDOOR ENVIRONMENT IN PRESCHOOL EDUCATIONAL ESTABLISHMENTS IN KENGARAGS NEIGHBORHOOD (RIGA)

The research evaluates the quality of indoor environment based on autumn and winter measurements. During the development of the work, the indoor ambient air temperature, relative humidity, illumination level, noise level, PM10 and PM2.5 particle concentration and microbiological contamination were measured. The obtained results indicate a relatively high level of particulate pollution, though relatively small inconsistencies in the microclimate and illumination.