The features of information support between different agencies in emergency situations in a number of countries, including in Ukraine, are investigated in the paper. Insufficient level of modern legal basis for ensuring information exchange between different agencies in case of emergency environmental situations is noted. There is a lack of common approaches to the role of emergency environmental situations in Ukraine's civil protection system. The necessity to investigate the distribution of responsibilities of the monitoring entities and their ability to conduct operational environmental monitoring to determine the information interaction between central, local and environmental authorities in monitoring emergency environmental situations was noted. The organization of interaction of units of the State Emergency Service of Ukraine with nature protection bodies in case of emergency environmental situations, organization of interaction between structural units of Ministry of Ecology and Natural Resources of Ukraine and central and local executive authorities is proposed. The scheme of information interaction of Ministry of Ecology and Natural Resources of Ukraine and the central and local executive authorities in conducting environmental monitoring in emergency environmental situations is proposed, which provides information through two channels - through regional state administrations and central executive authorities. It takes into account the need for a joint exchange of information between the State Emergency Service of Ukraine and Ministry of Ecology and Natural Resources of Ukraine for a timely response to potential and actual threats and the adoption of the relevant parts of the State Emergency Service of Ukraine measures for the prevention of emergencies and reduce their consequences. The reliability of the results of processing the received information is ensured by the implementation of the requirements of the unified regulatory and methodological base of Ukraine for means of measuring equipment. Keywords: emergency environmental situations, monitoring, information exchange, information interaction, environment